30.There are 103 elements found in nature,____ are metals.

tianjinsunjie2022-10-04 11:39:542条回答

30.There are 103 elements found in nature,____ are metals.
A most of which B most of them
C most of that D most which
选A?
为什么不选B?

已提交,审核后显示!提交回复

共2条回复
晕晕在乎 共回答了26个问题 | 采纳率84.6%
选A most of which
which指前面的103 elements
如果句中没有逗号,就选B
There are 103 elements found in nature and most of them are metals.
1年前
qishidaye 共回答了1027个问题 | 采纳率
选A是正解,你的理解不错,是定语从句
1年前

相关推荐

英语翻译Identify the literary elements of theme,setting,plot,and
英语翻译
Identify the literary elements of theme,setting,plot,and character within literary works
漂泊何处1年前1
baike39 共回答了23个问题 | 采纳率95.7%
鉴别文献著作中的文学元素:主题、环境、情节和角色.
英语翻译,time is one of the two elements that Americans save car
英语翻译
,time is one of the two elements that Americans save carefully ,the other being labor.
路茫茫人海中1年前2
RAINMORNING 共回答了14个问题 | 采纳率92.9%
时间是美国人精心节约的两大要素之一,另一个则是劳动力.
_ we know,there are 107 elements found in the nature.
_ we know,there are 107 elements found in the nature.
A.As long as B.Just as C.So far as D.For all
请问为什么呢?
monarch6471年前2
一个ii 共回答了16个问题 | 采纳率87.5%
So far as we know,是“就目前我们所知”的意思
英文版的1How are elements and compounds similar?How are they dif
英文版的
1How are elements and compounds similar?How are they different?
2What is the basic organizing feature of the periodic table of elements?
3Explain how the law of definite proportions applies to compounds.
4What type of compounds are compared in the law of multiple proportions?
5Name two elements that have properties similar to those of element potassium(K).To those of krypton(Kr).
6Complete the following table and then analyze the data to determin if compounds 1and 2 are the same compound.If the compounds are different,use the law of multiple proportions to show the relationship between them
analysis data of two iron compounds
Compound Tatol mass(g) Mass Fe(g) Mass O(g) Mass%Fe Mass%O
1 75.00 52.46 22.54
2 56.00 43.53 12.47
希望能尽快 解决最好中英文都有酌情+分
78903211年前2
苦涩的yy心 共回答了13个问题 | 采纳率92.3%
1.元素和化合物有哪些相似和不同?
A chemical element is a pure chemical substance consisting of one type of atom distinguished by its atomic number.A Chemical compound is a pure substance that is formed when atoms of two or more different elements combien and create a new material with properties completely unlike those of its constituent elements.They are both pure substances but elements consist of only one kind of atoms but compounds consist at least two different kinds.
元素是具有相同质子数的同一类原子的总称.化合物是两种或两种以上元素组成的纯净物.元素和化合物都是纯净物.但是元素是由同一种原子组成的而化合物是由至少两种不同原子组成的.
2.元素周期表的基本排布规律是什么?
There are 7 horizontal rows,called periods and 18 columns,called groups,in the periodic table.In each period,the atomic number of each element is increasing.Elements in the same group have similar chemical properties.
元素周期表有七个周期18个族.每个周期中元素的质子数从左到右递增.每个族中的元素化学性质相似.
3.解释如何将定比定律用到compound中?
The law of definite proportion states that different samples of a pure chemical substance always contain the same proportion of elements by mass.If there are two samples of the same compound,the proportion of masses of every elements in each of the two samples would be the same.
定比定律是说一个纯净物中每种元素的质量比是一定的.如果有同一种化合物的两个样本,那么这两个样本中,每种元素的质量比一定是相等的.
4.在倍比定律中,哪两种化合物被比较了?
CO and CO2
5.写出两个元素与钾性质相似,两个与氪性质相似的元素
和钾相似:Na,Ca
与氪相似:Ne,Ar
6.完成下表然后分析1和2 是不是同一种化合物.如果不是,请用倍比定律显示这两种物质的关系.
Compound Tatol mass(g) Mass Fe(g) Mass O(g) Mass%Fe Mass%O
1 75.00 52.46 22.54 70 30
2 56.00 43.53 12.47 78 22
These two compounds are different,because they have different proportion of the same elements by mass.
comparison:Fe:O mass ration in 1/(Fe:O mass ratio in 2)=77/117 which matches the conclusion from the Law fo multiple proportions wich means these two compounds are composed of same elements just in different ways.
这两个物质是不同的.但是由于元素质量比的比值是个简单整数比,我们可以知道这两种物质是由相同但是不同比例的元素组成的.
Elements in the upper right corner of the Periodic table for
Elements in the upper right corner of the Periodic table form acid anhydrides.
Nonmetallic oxides react with water to form acid solution.
第二句话为什么可以构成第一句话的explanation啊?
王辉学1年前2
标明 共回答了15个问题 | 采纳率86.7%
非金属氧化物和水反应生成酸(第二句话)
周期表右上角的元素是非金属(化学常识)
(所以)周期表右上角的元素能形成酸酐(第一句话)


这题比较坑,真考试基本不会遇到这种模棱两可的题目,不用管它了
化学专业英语翻译Except for hydrogen, a gas ,the elements of group IA
化学专业英语翻译
Except for hydrogen, a gas ,the elements of group IA make up the alkali metal family The are very reactive metals, and they are never found in the elemental state in nature.However,their compounds are widespread.all the members of the alkali metal family form ions having acharge of 1+ only in contrast , the elements of group ⅠB - copper,sliver,and gold-are comparatively inert . they are similar to the alkali metals in that they exist as 1+ ions in many of their compounds. However, as is characteristic of most transition elements , they form ions having other charges as well
文明VI1年前2
zhang1c 共回答了22个问题 | 采纳率86.4%
除了氢气、通过组元素的是碱金属家庭,一种非常活泼的金属,他们永远都不会被发现在单质状态的性质。然而,他们的化合物的成员非常广泛.所有碱金属家庭形式金属离子的1 +只有在形成鲜明对比的是,ⅠB组的元素——铜,银,和金比较惰性。他们是相似的碱金属存在为1 +离子在他们的许多化合物。然而,我们的主要特征,它们形成离子过渡元素有其它的用途
一句英语新闻的意思?Elements of the Fourth Infantry Division have alre
一句英语新闻的意思?
Elements of the Fourth Infantry Division have already conducted 27 raids associated with operation Sidewinder since it began on Sunday.
葶苈1年前1
xjtusv 共回答了13个问题 | 采纳率92.3%
自周日“响尾蛇行动”发起以来,第四步兵师成员已经发动了27次袭击,
英语翻译The addition of rare earth elements can change the morph
英语翻译
The addition of rare earth elements can change the morphology,size and distribution of the nonmetal inclusion in the metal,and reduce the influence of inclusions on theproperties of the metal.Meanwhile,the addition of rare earth elements can improve the property of retarded oxidation and thermal abrasion resistance of the material,and it also can refine the crystallization structure and improve the
mechanical performance and the service life of materials [7].In Ref.[8],the form of carbides is changed from reticulation to fracted reticulation due to the addition of rare earth (RE) elements into high chromium cast iron.In Refs.[9-10],the authors believed that it is difficult to completely modify the structure,morphology and distribution of the eutectic carbide by the addition of rare earth alone.In recent years,
many studies on microstructural modification of cast iron with combination of RE and other elements have been carried out.For example,the combinations of RE [11],RE-Al [12],RE-B [13],RE-V-Ti [14],RE-Mg [15] and RE-Al-B [16] are tried and good results are achieved.
In order to improve the properties of high chromium cast iron,the effects of composite modification with RE,V,Ti and B on the microstructure and properties of high chromium cast iron are studied in this paper based on the work of other researchers [17-19].
blowingwater1年前1
mrdinosaur 共回答了17个问题 | 采纳率94.1%
添加稀土元素可以改变非金属杂质在金属中的形态、尺寸和分布,并降低杂质对金属性质的影响.与此同时,添加稀土元素可以改善材料的阻滞氧化性质和耐热磨损性,它还能使结晶结构精细化和提高材料的机械性能和使用寿命[7].在文献[8]中,碳化物的形式由于在高铬铸铁中添加了稀土元素而从网状变成了破裂的网状.在文献[9-10]中,作者认为很难单纯通过添加稀土元素来完全修改共晶碳化物的结构、形态和分布.近年来,对用结合稀土和其他元素来对铸铁进行显微结构的改性已做了很多研究.例如,试验了结合RE [11], RE-Al [12], RE-B [13], RE-V-Ti [14], RE-Mg [15] and RE-Al-B [16],并取得了良好的结果.
为了改善高铬铸铁的性质,用RE, V, Ti and B复合改性对高铬铸铁显微结构和性质的影响在本文中基于其他研究人员的工作[17-19]进行了研究.
compound和mixture of elements的区别
世木晓杭1年前1
回到メ从前 共回答了21个问题 | 采纳率100%
compound是化合物,有两种或两种以上元素组成的纯净物.
mixture of elements是混合物,不属于纯净物.
【欢迎追问,】
6.__C__ man can now create radioactive elements,there is not
6.__C__ man can now create radioactive elements,there is nothing he can do to reduce their radioactivity.
A.As
B.Whether
C.While
D.Now that
10.__B__ the claim about German economic might,it is somewhat surprising how relatively small the German economy actually is.
A.To give
B.Given
C.Giving
D.Having given
15.___A_,a man who expresses himself effectively is sure to succeed more rapidly than a man whose command of language is poor.
A.Other things being equal
B.Were other things equal
C.To be equal to other things
D.Other things to be equal
18.A good many houses _B___ knocked down by the earthquake.
A.was
B.were
C.is
D.are
海岛贝壳1年前1
电灯泡里的钢丝 共回答了17个问题 | 采纳率100%
第一个表转折 尽管的意思
第二个 此处given是介词 “就……而言 考虑到”的意思 后面直接加名词 (如果是given that 后面就加从句)
第三个是独立主格结构.A和D的区别是前者表现在的状态 后者表将来时态 具体语境 所以选A
第四个 A GOOD MANY 修饰复数形式的名词 这从HOUSES可以看出来 .KNOCK DOWN是瞬间动词 再加上语境 用过去式
Ecological stoichiometry:the biology of elements from molecu
Ecological stoichiometry:the biology of elements from molecules to the biosphere这本书的影印版您知道那里有么?
0001shanren1年前2
唐津津 共回答了20个问题 | 采纳率85%
卖的不多,近300大元呢,图书馆有影印的
We can ___ a complex argument into its basic elements.
We can ___ a complex argument into its basic elements.
a、resolve
b、determine
c、 decide
d、 solve
深夏微凉1年前2
ldxwbl6 共回答了18个问题 | 采纳率83.3%
A resolve分解,解析
英语语法:About how many elements _____ make up most of the subst
英语语法:About how many elements _____ make up most of the substances we meet in everyday life?
A.it is which B.what it is C.is it that D.it is that
又强调句,又疑问句,强调句可以做定语从句?这里about只是个副词所以不管它吗?
彬爱猫1年前2
生tt较量 共回答了22个问题 | 采纳率90.9%
About how many elements _____ make up most of the substances we meet in everyday life?
A.it is which B.what it is C.is it that D.it is that
选项是C
这是一个强调句型的疑问句.
About how many elements is it that make up most of the substances we meet in everyday life?
陈述句型是:
It is about how many elements that make up most of the substances we meet in everyday life.
英语改错题下面句子中的A,B,C,D,选出错的并改正1.Similar elements in the prehisto
英语改错题
下面句子中的A,B,C,D,选出错的并改正
1.Similar elements in the prehistoric (A.remains)from both areas (B.suggest)that Indians and their neighbors (C.had maintained)distant but real cinnections (D.ever)before 1500B.C
2.It soon became (A.obviously)that instead of (B.being trained)to sing she (C.would)be trained (D.as the astronomer's assistant).
3.He(A.also conceived)that the solar system and the universe(B.would come)into existence (C.by)a natural process and (D.would disappear) one day.
4.The moon has a mass that is nearly hundred times (A.less)than (B.the earth);(C.in consequence),the force of geavity at the moon's surface is only one-sixth (D.of)that at the earth's surface.
5.The Bunsen burne is (A.so)named because it(is thought)(C.to be invented)by Robert Bensen,who was German (D.by)birth
6.(A.Much although)I have teaveled,I have never seen anyone (B.to equal),her in thoroughness,(C.whatever)(D.the job)
7.The (A.weeds)and tall grass in that yard (B.makes)the house(C.look)as if it (D.had been vacant)for quite some time
8.(A.If only)the nature of the aging process (B.is)better understood,the possibility(C.of discovering)a medicine that can block the fundamental process of aging (D.seems)very remote.
9.When I consider how(A.talented he is)(B.as a painter),I cannot help(C.but believing)that(D.the public)will appreciate his gift.
10.Allen (A.has stated) that he (B.has always had)(C.a great interest)and admiration (D.for)the work of the British economist Keynes
寞砂1年前2
波波大 共回答了20个问题 | 采纳率95%
1.A remaining
2.A obvious
3.B came
4.C as a consequence
5.C to have been invented
6.A Much as
7.B make
8.A Only if
9.C but believe
10.A stated
好题,够威够力,真实痛快.
英语单项选择 郁闷!1.Most varieties of steel______elements,such as ca
英语单项选择 郁闷!
1.Most varieties of steel______elements,such as carbon,silicon and phosphorus.
A.contain B.contains C.containing D.to contain
2.---How are you getting along with your study in the university?
---I ____off to a bad start,but I'm used to it.
A.had got B.was getting C.got D.have got
3.I wonder how he_____that to the teacher.
A.dare to say B.dare saying C.not dare say D.dared say
1.A 2.C 3.D 我就是不能清楚地理解,
sunnysfx1年前1
移动硬盘总经销 共回答了16个问题 | 采纳率87.5%
1.主语第三人称单数用动词加s,表示正在进行要用动词ing,而且动词不定式和动名词前面要有动词.most varieties of...是第三人称复数,用动词原型.
2.i'm used to it 是过去式,前面一句和后面一句时态一致就是了.
3.参看dare的用法
英语翻译There are a number of critical elements in the tradition
英语翻译
There are a number of critical elements in the traditional communication model.Choose a single element and analyze the relevance of your choice to the entire process.Ensure that you examine your choice in light of theorists studied.
爱抡砖头的人1年前3
寰宇天文 共回答了20个问题 | 采纳率90%
在传统的交流模式中有许多决定性的(或值得批判的,这里意思根据楼主的具体材料出处决定)因素.选其中一种因素并且分析你所选择的这个因素与全部过程(或全部因素)的相关性.确保要按照理论家研究(的方式或者步骤等)来进行你的因素的选择.大意是这样,楼主根据你知道的情况理解下.希望对你有所帮助.
阁下请看句子:Time is one of the elements that Americans save caref
阁下请看句子:
Time is one of the elements that Americans save carefully,the other being labor.
这句话中the other being labor 为什么用“being ”而不是用“be”?
打错了:为什么用“being ”而不是用“is”?
镜子哥哥1年前5
多年前一个夜 共回答了18个问题 | 采纳率77.8%
如果要用is的话,the other is labor 前面就要加个and,不加and的话后面并不是句子,是短语,要所以动词要用动名词形式
active elements是什么意思
2对办1年前1
受不了你了 共回答了16个问题 | 采纳率93.8%
active elements
活跃的元素;表面活性元素;高活性成分
双语例句
1. In the ship safety management system, the seaman is the most fundamental and active elements.x09
在船舶安全管理体系中, 船员是最基本、最活跃的要素.
2. Extreme Programming concentrates exclusively on the active elements of a program and executable tests.x09
极限编程关注于程序的活动单元和可执行的测试.
3. The low pass filters are preferably non - IC - low pass filters without active IC - elements.x09
该低通滤波器优选地是不具有有源IC元件的 非 IC低通滤波器.
4. Oxygen is one of the important elements in the physical world, which is very active chemically.
氧气是自然界中一种十分重要的物质, 其化学性质十分活跃.
5. The paper reports a determination of 14 elements in the active cell p . quinquefolium by ICP - AES.x09
本文应用ICP-AES法同时测定西洋参鲜细胞中14种微量元素.
英语翻译elements of the language label pieces of content such as
英语翻译
elements of the language label pieces of content such as “paragraph,” “list,” “table,” and so on.
mine月牙儿1年前4
悠YOU鱼 共回答了20个问题 | 采纳率100%
The elements of the language label pieces of content such as “paragraph,” “list,” “table,” and so on.语言标签的内容块中的元素,比如“段”、“列表”、“表格”等等
不是句子,是个名词短语
The elements名词
of the language label pieces of content定语
such as “paragraph,” “list,” “table,” and so on同位语
The mixture of elements in the air can be thought of___a sol
The mixture of elements in the air can be thought of___a solution of gases.
The mixture of elements in the air can be thought of___a solution of gases.
A,to B,as C,over D,about
煮妇啦啦啦1年前4
eleavor 共回答了17个问题 | 采纳率100%
B,as ( can be thought of as 是情态动词的被动语态)
think of sth as sth 把.看做.
getElementsByTagName("name")[0].firstChild.data;求解释
getElementsByTagName("name")[0].firstChild.data;求解释
firstChild什么意思
bobo_wangyu1年前1
wy111111 共回答了16个问题 | 采纳率87.5%
如:

getElementsByTagName("name")[0]就是得到了第一个tr节点
firstChild得到子节点
data得到数据
希望对你有用了
英语翻译vaporised elements from the parent metal,metal coatings,
英语翻译
vaporised elements from the parent metal,metal coatings,or flux coated welding consumables
乱Princess1年前3
蔚蓝色D天空 共回答了25个问题 | 采纳率96%
从金属母材,镀层或者焊接融材中气化的分子元素!
英语翻译elements are substances made up of only one kind of atom
英语翻译
elements are substances made up of only one kind of atom.atoms of an element all contain the same number of protons.elements can be classified according to the particles they are made up frpm.elements can be classified by there state (or phase )at room temperature.the state means whether the element is a solid.liquid or gas.
substances which contain different elements are either mixtures or compounds.
最好不要用翻译器.(现在我馍有财富值了.赚够多少一定全部抛出感谢)
话是这样讲 可我晕了。书上说element 是由一种atom组成的 然后有的atom连接在一起成为了molecule 就是说 element是由一种atom 或者molecule组成的吗?那像air和nitrigen dioxide那些东西 是不是不是mixture就是compound?
雨鹤20001年前4
z_boble 共回答了17个问题 | 采纳率76.5%
元素是指由同一种原子构成的物质.一种元素中的所有原子都包含有相同数量的质子.元素就是
根据其基本粒子的组成来定义的.另一种定义方式是根据该元素在室温下处于什么状态来决定的.所谓状态是指其处于固态,液态还是气态.
由不同元素组成的物质,叫做混合物,或者是化合物
protection from the elements
protection from the elements
a sense of order
网站翻译自重
最爱郑智化1年前1
jing766 共回答了23个问题 | 采纳率87%
protection from the elements
品牌意思的翻译是
「无为不至的贴心守护」
字面意思是
保护着不受恶劣天气之苦
a sense of order
条理性
英语翻译Steel is an alloy of iron and carbon with other elements
英语翻译
Steel is an alloy of iron and carbon with other elements added to produce specific properties.the various types of steel can be grouped under two major headings.
carbon steel .a steel in which the main alloying element is carbon .carbon steels are further divided into three groups .
low carbon steel .this steel has a carbon content of less than 0.30 percent .it is the most common type and is often called mild steel .it is relatively inexpensive .ductile,soft ,and is easily machined and forged.mild steel cannot be heat-treated .low carbon steel is a general purpose steel.
Medium carbon steel.this steel has a carbon content between 0.3 percent and 0.8percent .harder and stronger than mild steel ,it can be hardened by heat treating.medium carbon steel is most commonly used for forgings,castings ,and macheined parts for automobiles ,agricultural equipment ,machines ,and aircraft .
High carbon steel .this type of steel is easlily heat-treated to produce a strong ,tough part .the material has a carbon content above 0.8 percent .it finds wide use in hand tools ,cutting tools ,springs,and piano wire.
high alloy steel.these steels contain significant amounts of other elements in addition to carbon.the common high allloy steels are:
stainless steel which is produced by using chromium as a significant alloying element along with nickel and other metals.the result is a tough,hard ,corrosion-resistant metal.
Tool steel which is a special group of high carbon steels produced in small quantities to high quality specifications.tool steels are used for a wide range of cutting tools and forming dies.
Manganese steel which is an alloy containing 12 percent manganese and one percent carbon.This metal is used in mining ,railroad ,and construction equipment because of its high tensile strength.
xiagao789281年前1
milanxyz2 共回答了17个问题 | 采纳率94.1%
钢是铁和其他元素碳合金添加到具体的详细性能,生产各类钢可根据两大类分组.
碳钢.一钢中的主要合金元素是碳.碳钢进一步分为三组.
低碳钢.这个钢只有不到百分之0.30的碳含量.这是最常见的类型,通常被称为低碳钢.也相对便宜.韧性,柔软,易于加工和forged.mild钢不能热治疗.低碳钢是一种通用钢材.
中碳steel.this钢有0.3至百分之0.8percent碳含量.更难,比软钢强,它可以通过热treating.medium碳钢淬火是最常用的锻件,铸件用于汽车macheined及零部件,农业设备,机器和飞机.
高碳钢.这种类型的easlily钢热处理后产生强烈的,艰难的部分.材料有百分之0.8以上的碳含量.找到在广泛使用手工工具,刀具,弹簧,钢琴线.
高合金steel.these钢除含有大量的其他因素共同的carbon.the高allloy钢材:
不锈钢是由作为一个重要合金与其他metals.the镍和铬元素产生的结果是一个艰难,艰苦,耐腐蚀金属.
工具钢是一种高碳钢小批量制作高质量specifications.tool钢集团特殊钢用于切割工具的广泛成型模具.
锰钢这是合金中的锰和百分之十二碳百分之一.这种金属是用于矿山,铁路和建筑设备由于其具有高抗张强度.
Let R be the relation on Z×Z ,that is elements of this relat
Let R be the relation on Z×Z ,that is elements of this relation are
pairs of pairs of integers,such that ((a,b),(c,d)) ∈ R if and only if
a+d = b+c.Is R an equivalence relation?Explain.
造词宰相1年前1
欧阳珊Ids 共回答了16个问题 | 采纳率93.8%
先证递移性 {(a,b),(c,d)}∈ R {(c,d),(e,f)}∈ R=> a+d=b+c;c+f=d+e
=>a+d+c+f=b+c+d+e => a+f=b+e =>{(a,b),(e,f)}∈ R ...ok
再证对称性 {(a,b),(c,d)}∈ R =>a+d=b+c =>c+b=d+a =>{(c,d),(a,b)}∈ R
.OK
最后证反身行性{(a,b),(a,b)}∈ R => a+b=a+b 显然
=>R是等价关系
英语翻译while man can now creat radioactive elements,there is no
英语翻译
while man can now creat radioactive elements,there is nothing he can do to reduce their radioactivity翻译
余毛儿1年前3
lanmengkafei 共回答了22个问题 | 采纳率95.5%
虽然现在人们可以制造放射性元素,但是没办法降低(放射性元素的)放射性.
英语从句问题Despite much research,there are still certain elements
英语从句问题
Despite much research,there are still certain elements in the life cycle of the insect that (are) not fully understood.
因为修饰的是elements所以用are嘛,但如果我后面想修饰insect的话该怎么写呢
YEOHYU1年前2
yuanhai 共回答了17个问题 | 采纳率100%
如果要修饰insect,则用第三人称单数.
Despite much research,
there are still certain elements in the life cycle of the insect that is known currently.
语言的特点是二义性,到底修饰哪个名词要根据情况解读.
We realize that air does not contain the same elements that
We realize that air does not contain the same elements that it contained years ago.我们意识到空气中包含的元素与若干年前所包含的元素不一样了. that it contained years ago在句中是什么成分?是主动语态的一般过去式形式还是被动语态?it又是代指什么的?
微薄的信念1年前2
昂利一号 共回答了18个问题 | 采纳率88.9%
that it contained years ago是定语从句,修饰先行词elements.
contained是是主动语态的一般过去式形式,关系代词that作其宾语;
it指air.
先行词被the same修饰时,定语从句的关系代词可以用as也可以用that引导.但是意思有区别.
例如:Your shirt is the same as mine.你的衬衫和我的一样.
This is the same pen as I lost yesterday.这和我昨天丢失的笔是同一支.
求问matlab 的 In an assignment A(I) = B,the number of elements
求问matlab 的 In an assignment A(I) = B,the number of elements in B and I must be the same.错在啊
clear all;
close all;
ts=0.001;
sys=tf(5.235e005,[1,87.35,1.047e004,0]);
dsys=c2d(sys,ts,'zoh');
[num,den]=tfdata(dsys,'v');
u_1=0.0;u_2=0.0;u_3=0.0;
r_1=rand;
y_1=0.0;y_2=0.0;y_3=0.0;
x=[0,0,0];
error_1=0;
for k=1:1:3000
time(k)=k*ts;
m=1;
if m==1 %step input
kp=0.5;ki=0.001;kd=0.001;
rt(k)=1;
end
if m==2 %sawtooth input
kp=1.0;ki=2.0;kd=0.01;
rt(k)=mod(time(k),1.0);
end
if m==3 %random input
kp=1.0;ki=2.0;kd=0.01;
rt(k)=rand;
end
u(k)=kp*x(1)+kd*x(2)+ki*x(3);
if u(k)>=6
u(k)=6;
end
if u(k)
判长王发1年前1
18980000 共回答了19个问题 | 采纳率100%
我晕,我以为是啥大问题,改了好几分钟
y_3=y-2;y_2=y_1;y_1=y(k); %%%%%% 这一行替换成
y_3=y_2;y_2=y_1;y_1=y(k); %%%%%%% 自己看看有什么不同
粗心害死人啊
这句话语法表达对不对?Remove ambition and the essential elements of org
这句话语法表达对不对?
Remove ambition and the essential elements of organization seem to fly apart.
以前在一本书上看到的例子,好像是这样.但是现在看不大懂,请分析下这句话是否正确以及语法结构.
d1t431年前3
阿zhen_898 共回答了21个问题 | 采纳率100%
这句话是正确的.在祈使句后,如果用and连接一个简单句, 就表示条件与结果的关系,它们虽然在语法上是 并列关系,但在意思上却是主从关系,可译为“如果……就……”.给你两个其他的例句:
Work hard and you will live happily. (如果你)努力工作,你就会活得愉快.
相当于 If you work hard,you will live happily.
Come early and you will see him. (如果你)早来的话,你就会见到他.
相当于 If you come early, you will see him.
所以,就你给出的这个句子,应该就是属于这种用法.可以翻译为如下:
【翻译】如果一个企业失去了进取心,其企业文化中的精华价值观将不复存在.
what elements do you consider when looking for a job?
anniqq1年前4
1宝马 共回答了17个问题 | 采纳率100%
纯粹翻译:你找工作的时候注重什么因素.(工资?前景?)
至于问题的答案,只有你自己知道啦.
英语翻译The Restatement identifies the elements of a cause of ac
英语翻译
The Restatement identifies the elements of a cause of action for aiding and abetting a tort,but it is vague as to exactly how those elements apply in a real case.The Restatement states that “for harm resulting to a third person from the tortious conduct of another,one is subject to liability if he….(b)Knows that the other’s conduct constitutes a breach of duty and gives substantial assistance or encouragement to the other so to conduct himself.”
一水之杉1年前4
huazi070 共回答了20个问题 | 采纳率85%
The Restatement identifies the elements of a cause of action for aiding and abetting a tort,but it is vague as to exactly how those elements apply in a real case.
(法律)重述中指出对帮助与教唆侵权行为的起诉的要点理由,但对于在真实案例中如何具体评判却没有表达清楚.
The Restatement states that “for harm resulting to a third person from the tortious conduct of another,one is subject to liability if he….(b)Knows that the other’s conduct constitutes a breach of duty and gives substantial assistance or encouragement to the other so to conduct himself.”
重述中阐明:若已知当事人行为已构成违反规定却仍在事实上提供帮助或支持而导致第三人的伤害,则同样应承担法律责任.
英语翻译1.no elements of any kind (including signage / logos or
英语翻译
1.no elements of any kind (including signage / logos or graphics) are to occur on the outside of the location boundary.(only the interior portion of a wall which serves as a boundary may be utilised by the vendor).
2) graphics and logo / branding locations throughout the area must be consistent with Walton Brown's graphic and logo standards.
3) the shop front exterior must remain open w/o fixturing.
4) no signage / logos are permitted on the shop front glazing.
smowman1年前4
光脚美人 共回答了18个问题 | 采纳率88.9%
1 在商店地点分界线的外面,不要有任何标志(包括标牌/商标或图案);
2 在整个区域的可画标识处的图案和商标,必须与瓦尔顿.布朗公司的图案和商标标准相一致;
3 店面前的外面必须保持敞开,无固定障碍物(W/O = without =无);
4 店面前玻璃上,不允许有图案/商标.
The two elements _____water is made are th oxygen and hydrog
The two elements _____water is made are th oxygen and hydrogen.
A that
B which
C of which
D with which
简彼特1年前1
郁郁而活 共回答了25个问题 | 采纳率92%
C.
前面半句如果不用从句说法就是:
Water is made of two elements.
那么用从句就成了:
The two elements of which water is made are...
介词在这里在疑问代词which之前,相似的用法还有:
I speak two languages one of which is English.
This is the process by which the sauce is reduced.
ITR elements
张思德u1年前1
真的忘得了吗 共回答了20个问题 | 采纳率100%
IRT,在生物学中,ITR((inverted terminal repeat )指的是反向终端重复序列,即在同一多核苷酸链内的相反方向上存在的重复的核苷酸序列.在双链DNA中反向重复可能引起十字形结构的形成.
elements是元素的意思.
整体大概就就能是生物上的核苷酸包含的元素
euclid's-elements是什么意思
我什么都不会1年前1
公牛2008 共回答了14个问题 | 采纳率78.6%
euclid's-elements
欧几里得's-elements
此结果来自百度翻译,长句或段落建议您使用翻译频道
双语例句
1. Understand Euclid's proof of the Pythagorean Theorem.x09
理解欧几里得对毕德哥拉斯定理的证明.
2. His style shows how deeply he was influenced by Euclid's treatment of ration and proportions.x09
牛顿书中的写法表明,他深受欧几里得对量和比例分析的影响.
杜绝有道 google.文中需要有Visual Elements of Design 视觉设计元素这个词,用词可以高级点
杜绝有道 google.文中需要有Visual Elements of Design 视觉设计元素这个词,用词可以高级点,句型符合大学生.
这句话的名字叫做四明山秋色,顾名思义是一副山水画,也是我选择它的原因之一.今天我将根据视觉元素设计这一方面来介绍它.整幅画的艺术设计的主体为山,规模非常的大,画面粗质大气,颜色对比强烈,蓝色中有点点的橘色来点缀,用色朴实真实.线条密集.这幅画的视觉设计元素的意义就在于此,真实再现了四明山秋天的景色.
写得好的追加分数,都给了.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急.急
就是介绍一幅画,老外给出的作业,大概写出这个意思来就可以了 ,晚上还要背出来,
林9宁171年前5
农夫的爱 共回答了18个问题 | 采纳率94.4%
this is a picture which is named the autumn scenery of 四明山.the elfevident,it is a picture of landscape painting.of course,that is one of the reasons why i chose it.
today i will introduce it based on visual elements of design.the object of the art design in the whole picture are mountains with large size.the picture plane is rough but atmosphere.
except,another character of this picture is the contrasting color.specks of orange adorn in the blue color.
we can see the meaning of this painting in visual elements of design from its guileless real coloring and intensive lines.from it we can see the autumn scenery of 四明山 that is reproduced.
英语翻译the occurrence of chemical elements depends on the exist
英语翻译
the occurrence of chemical elements depends on the existence of stable nuclei
普美1年前2
没有阳光的温暖 共回答了25个问题 | 采纳率100%
化学元素们的发现是基于其原子核的稳定性的.(貌似意思是越稳定越容易发现,不稳定的发现的比较晚)
给的东西有点少,occurrence的意思我觉得这个还是比较合适的.
嗯,你看着理解吧~
啥意思求解答When all the fashion elements center on you,you are th
啥意思求解答
When all the fashion elements center on you,you are the irreplaceable fashion icon.
方tt1年前2
ft1618406 共回答了22个问题 | 采纳率95.5%
When all the fashion elements center on you, you are the irreplaceable fashion icon.
当所有时尚元素集于一身,你便是无可替代的时尚达人.
几道SAT2化学1.Which of the following elements would have the lar
几道SAT2化学
1.Which of the following elements would have the largest atomic radius?
A.Cl B.F C.Li D.Ne E.Na ——答案选E.稀有气体和其他元素怎么比原子半径呢?
2.Candles can be safely stored at room temperature,even though their reaction with air is spontaneous at room temperature.——答案是T.那岂不自燃了?
3.A piece of zinc placed in a blue copper nitrate solution will displace the copper from the solution,producing copper metal and a colorless Zn2+ solution.——答案是F.哪错了呢?
随流水到天崖1年前3
我是奥拓 共回答了23个问题 | 采纳率95.7%
1.Na是第三周期元素,其他都是第二周期,哪怕是稀有气体也一样.
2.我想题的意思是能在室温下点燃蜡烛,除此之外实在想不到别的原因了.
3.producing copper metal 错,Cu在酸性条件下会与NO3-发生氧化还原反应,生成Cu2+与气体NO2.
英语翻译我不明白的是后面的with elements either 1 or 0,DS是一个包括1或0为元素的m×m对角
英语翻译
我不明白的是后面的with elements either 1 or 0,DS是一个包括1或0为元素的m×m对角矩阵吗?请大侠指点迷津
太阳雨雾1年前1
apolloer 共回答了20个问题 | 采纳率85%
是这个意思,Ds是一个由0或者1组成的m×m对角矩阵.
就是矩阵里的项不是0就是1
请问这句GRE阅读句是什么意思Granted that the presence of these elements n
请问这句GRE阅读句是什么意思
Granted that the presence of these elements need not argue for an authorial awareness of novelistic construction comparable to that of Henry James,there presence does encourage attempts to unify the novels heterogeneous parts.主要是前半句不明白
出钱壹丁1年前1
甜蜜之吻 共回答了18个问题 | 采纳率94.4%
诚然,这些因素的存在并不能证明作者对小说架构的意识可与亨利.詹姆斯(Henry James)的那种意识相比拟;然则,任何力图将小说所有形形色色的因素统一起来的做法,在某种程度上注定是无法令人信服的.
难句类型:复杂修饰、抽象词
本句的结构固然复杂,但造成最大的阅读难度的,主要还是对一些抽象词的理解.
下面是对一些关键词汇的解释:Granted that出现在句首,其意思是大家都同意、当然,实际上是一种让步语气,等于admitted,of course.
Need not argue中的argue在此不是表示常用的那个辩论、争论的意思,而是表示意味着或证实的意思,其同义词是maintain或prove.
Camparable的词义有两个,除了读者熟悉的that can be compared之外,还有一个意思是worthy of comparison,其同义词是as good as.本文中用的是后面的那个意思
所有放射性元素都是很活泼的.这句话不对么?原话是 all radioactive elements are highly
所有放射性元素都是很活泼的.
这句话不对么?
原话是 all radioactive elements are highly chemically reactive.
稀有气体是放射性元素么?但是放射性元素不就是因为自身不稳定才放出粒子...
lpf7161年前4
klryxs 共回答了16个问题 | 采纳率93.8%
小弟很懂,听说刚开了一家啊,没错的啦有``
A substance composed of two or more elements chemically comb
A substance composed of two or more elements chemically combined is called a mixture判断正误
能翻译一下吗?尤其是element和chemically
弱水三千至爱此井1年前1
幻影1983 共回答了18个问题 | 采纳率83.3%
错吧..应该是化合物,不是混合物..你可以百度hi我,我告诉你我QQ,你直接在QQ上问我
element是元素,chemically是adv.用化学;以化学方法,你指的是字面意思吗
英语翻译One kind of radioactive elements,the initial mass of 500
英语翻译
One kind of radioactive elements,the initial mass of 500 mg,decay by 10% per annum.
(1) Find the t years,the quality of this radioactive element ω of the function expression;
(2) derived from the function expression,find the half-life of radioactive elements (accuracy 0.1)
guguty1年前1
vinvinkong 共回答了19个问题 | 采纳率94.7%
一种放射性元素 初重是500毫克,每年消退10%
找出在即将来临的几年内,这个函数表达式的放射性元素ω的质量;
从这个函数表达式中,计算出这种放射性元素ω的半衰期(精确到0.1)
仅供参考~
求大神翻译.一定要准确!拜托Performance of fiber beam–column elements in th
求大神翻译.一定要准确!拜托
Performance of fiber beam–column elements in the seismic analysis of a lightly reinforced shear wall
背着棺材买笑1年前3
damofengchen 共回答了16个问题 | 采纳率81.3%
这句话应该不是完整的一句话吧.
大概意思就是 fiber beam-column elements(这个东西) 在对轻微加固的shear wall的seismic 测试的中性能.
中间的名字自己查字典.
what are the basic elements in a play?
what are the basic elements in a play?
want english answer.thx
宇文逍遥风1年前5
1sof 共回答了22个问题 | 采纳率77.3%
theme,
plot,
characters,
language
music,and spectacle.
The answer is from my English class notes.
求语法Time is one of the two elements that Americans save caref
求语法Time is one of the two elements that Americans save carefully,the other being labor.
这句话the other 后面为什么是being呢?谁来帮我详细分析一下这句话的语法呀?忘交几个英语好的大学生朋友
riqi0271年前1
WANG汪 共回答了26个问题 | 采纳率84.6%
Time is one of the two elements that Americans save carefully,the other being labor
这句话=Time is one of the two elements that Americans save carefully, while the other is labor.
"while the other is labor" 在这里是比较状语从句.当把连接词去掉的时候,the other 和 time是两个不同的主语, 所以要用独立主格表示.
这里是独立主格:名词 / 代词 + -ing分词 的用法.如:
The bus coming here soon,(=Since the bus is coming soon) we should get everything ready. 汽车很快就要来了,我们应该把一切事情准备好.

大家在问