frequency-density是什么意思

身心尘外远2022-10-04 11:39:541条回答

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james_zou79 共回答了8个问题 | 采纳率75%
1.Their instruments detected very faint radiowaves at a frequency of 3 kilohertz.(26.5K)
他们的仪器检测到一个3千赫的微弱无线电波.
2.Fatal road accidents have decreased in frequency over recent years.
近年来致命交通事故发生率已经下降.
3.If we can know their frequency we will monitor their talking.
如果我们知道他们的频率,我们就能监听他们的谈话.
1年前

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Aliasing may occur for the specified frequency是什么意思,这是数据采集系统
Aliasing may occur for the specified frequency是什么意思,这是数据采集系统的警告中看到的
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aliasing
1.走样,混叠;别名使用
2.混淆现象
3.;化名,假信号清除,毛刺,产生伪信号
specified
精确确定,规定的,额定
v.指定( specify的过去式和过去分词 ); 详述; 提出…的条件; 使具有特性
frequency
n.频繁性; [数][物]频率,次数; 频率分布
Aliasing may occur for the specified frequency
综上所述,本句大意应该是采集超过额定次数导致混叠
数学、函数单位翻译The units off the frequency response function are m
数学、函数单位翻译
The units off the frequency response function are metres per second squared per degree for lateral acceleration,degree per second per degree for yaw velocity,degree per degree for roll angle and newton metres per degree for steering-wheel torque.
里面很多per degree 而且连着那么长
怎么翻译
wqet767351年前7
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首先是把内容弄明白,然后整理一下.
频率响应函数的单位,表达如下:
横向加速:每度每平方秒米
横摆角速度:每度每秒度
倾侧角:度每度
转向盘扭矩:.每度牛顿米
【英语牛人团】
英语语言描写中style and frequency是什么意思
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style refers to the way in which language is used in a given text——即“语体”;
frequency refers to the frequencies that certain language should be chosed and computed.
即某种语言被使用的“频率”.
希望能帮到你 若果有用 请及时采纳 我在攒等级 谢谢!
英语翻译It tracks the frequency of the words and phrases in the
英语翻译
It tracks the frequency of the words and phrases in the media.
it is the first sign that the traditional top five fashion cities -New York-do not control global fashion any more.
The following are the 10 top fashion cities of 2010 and changes fron 2009.
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它收集了频率的单词和短语的报道.
它是世界上第一个迹象表明,传统的五大时尚城市控制York-do -新的全球时尚了.
以下为10到2010年,全球时尚城市的变化,从2009年.
adverbs of frequency
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表示频率的副词,如often, sometimes, always, seldom等
gymnastics,Argentina,frequency各是什么意思?
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gymnastics,n.
体操;体育[J]
Argentina,n.
阿根廷
frequencyn.
频繁,屡次[U]
英语翻译1.Reach and frequency.Advertisers must choose some combi
英语翻译
1.Reach and frequency.
Advertisers must choose some combination of reach and frequency to attain their
advertising objectives.Reach is defined as the number of individuals or households exposed to at least one ad during a given period of time—typically four weeks.The term can be used in connection with a single media vehicle or a media schedule comprising a number of different media vehicles.Reach is typically expressed as a percent of the target audience:for example,if the target audience was 100.000 persons and the media schedule reached 70.000,the reach would be 70 percent.Ordinarily,costs rise at an increasing rate as higher levels of reach are sought.
Duplication occurs whenever a marketer purchases a second medium .some portion of the audience of the first medium is almost always part of the audience of the second medium.Assume that medium A has an audience of 100.000persons and medium B,90.000,if 40.000 of the persons exposed to medium B are also members of A’ s audience,then buying the two media yields an unduplicated audience of 150.000---not 190.000,duplication leads to frequency,which is the number of times the target audience is exposed to a message within a given tome period--- usually four weeks.
There are several problems in using these measures.First is the matter of defining the target audience and correlating it with the audiences reached by the various media vehicles.A second problem is defining exposure---is it an opportunity to be exposed to a given message or is it an actual reading of a print ad,actual watching of a TV commercial,or actual listening to an ad in radio?Needless to say,it is a difficult task to measure exposure no matter how it is defined.Third,not all who are exposed are of equal value to the advertiser----some may not even be prospects.Fourth,how should successive exposures be weighted?Is a second exposure worth more than a third?And how much time should elapse between exposures?
Reach and frequency measures ate used to prepare the advertising schedule,which,in turn,determines total advertising expenditures.In estimating the cost of a given schedule,media planners simplify their task by using gross rating points,which ate calculated by multiplying reach by average frequency.Assume a reach of 70 percent and a desired average frequency of four,the number of GRPs would then he 280.By multiplying this by an estimated cost per GRP,the cost for a proposed media schedule can he estimated.
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.达和频率.有些广告主必须选择组合和频率来达到其广告达到目标.人数达定义为个人或家庭至少有一专暴露在某个时期--通常四个星期.一词可用于汽车与单一媒体或媒体时间表包含多种不同媒体的车辆.通常表示为达成以上目标观众:例如如果对象是人与媒体100.00070.000时间表达成,将会达到70%.按说,成本速率上升为寻求更高层次的接触.每当出现重复购买第二中等有一手. 一部分观众中几乎总是第一部分观众二中等.假定一个具有中等及中等100.000persons观众乙、90.000、如果人接触了40.000乙同属一个中型的观众然后买了两产量媒体地表观众---不150.000190.000,导致重复频率这是多少次接触对象是一个特定的讯息--通常四星期内托.有几个问题在使用这些措施.第一件事是确定的对象,它与观众达成了相关的各种媒体的车辆.第二个问题是确定是否有机会接触--受到某一讯息是否确实读了印刷广告、实际收看的电视广告中,还是在实际收听电台的广告?不用说,这是一项艰巨的工作计量曝光不管是界定.第三,并非所有的人都受到同等价值的广告----有些可能连前景.四是怎样被相继曝光加权?二是暴露总值超过三分之一.要多少时间相隔曝光?使用频率及措施达成准备吃广告时间表,从而决定广告支出总额.在成本估算特定时间表,简化他们的任务规划者媒体用毛评级站其中吃乘以平均次数达到了.假设达到70%和合意平均每隔四、然后他将GPRS的人数280.这个由2160元的造价估计玻璃钢的成本为媒体提出时间表,他估计可以.
英语翻译The increased frequency and strenghth of hurricanes is w
英语翻译
The increased frequency and strenghth of hurricanes is what we shall have to learn to expect given global warming.
请分析一下句子结构并翻译.
given global warming做的是什么成分?修饰什么呢?
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鉴于全球变暖现象,我们不得不学着接受不断上升的飓风发生频率和强度.
全句分成三大部分..
The increased frequency and strenghth of hurricanes(不断上升的飓风发生频率和强度) is what we shall have to learn to expect(是我们我们不得不预期的)given global warming(鉴于全球变暖的发生).
化简来就是
the frequency and strenghth is what we shall expect.
我们应预料到.
英语翻译不是物理上的"频率",例如:汽车每15分钟一班,是Frequency:15min 还是Period:15min
英语翻译
不是物理上的"频率",
例如:汽车每15分钟一班,
是Frequency:15min
还是Period:15min
或是Duration:15min
或是Interval:15min
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翻译成“频次分布”
每15分钟可以翻译成 every 15 mins.
如果要指定个名词,那应该是Interval.
The interval for the buses is 15 mins.
或者
The duration between every two buses is 15 mins.
adverbs of frequency的中文
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charge by the number of times.
简单点charge by times.也可以
那就是楼主英语知识欠缺了,time有次数的意思,而且使用比较频繁,比较口语化,当然了charge by frequency也是可以.
the frequency with which young children make requests for pr
the frequency with which young children make requests for products advertised on TV may serve ___ (as/for/to/on我选as) an indicator of the extent of the ___(effect/affect/influence/force我选effect) these commercials have on children.
这一句话中文怎么翻译?
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high frequency linke
英语翻译如题,a wave with a 20KHz frequency?
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frequency
频率
双语对照
词典结果:
frequency
[英]['fri:kwənsɪ][美][ˈfrikwənsi]
n.频繁性; [数][物]频率,次数; 频率分布;
复数:frequencies
以上结果来自金山词霸
柯林斯高阶英汉词典
网络释义
百科释义
1.N-UNCOUNT频率;发生次数The frequency of an event is the number of times it happens during a particular period.
The frequency of Kara's phone calls increased rapidly...
卡拉的电话飞速增多.
2.N-VAR(声波或无线电波的)频率,周率In physics,the frequency of a sound wave or a radio wave is the number of times it vibrates within a specified period of time.
You can't hear waves of such a high frequency.
如此高频率的声波是无法听到的.
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frequency-tuned
频率 调台
单词的意思就是
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调频的
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应该是 multi-frequency吧
多频
例如 multi-frequency exploration多频勘探
英语翻译Radio Frequency Identification(全译“无线射频识别”,英文简称RFID).无线射频
英语翻译
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Radio Frequency Identification as "the wireless radio frequency identify",English brief name RFID).Wireless radio frequency 's identifying a technique is 1 kind that the 90's in 20 centuries starts rise to automatically identify a technique and RFID technique's making use of a wireless radio frequency method's being read an of machine and radio frequency card to carry on doesn't get in touch with a double to deliver to identify by attaining a target the purpose which exchanges with data toward the data.Compared with traditional type code,Ci card and IC card,radio frequency card's have doesn't get in touch with,read speed quick,have never worn away,been free from environment influence,life span long,the characteristics of easy to usage with have to defend conflict function,can handle several cards in the meantime.
The RFID technique is to develop a quickest high-tech technique for 21 centuries,along with with combine of traditional network,the RFID technique emerges a huge market an application a potential,is called "thing allied net" and"the next generation Internet".Currently,the RFID has become study of IT industry a little bit hot,is see as next"gold mine" of IT industry.Each big and soft hardware manufacturer,include IBM,the MicorosoftOracle of the Motorola Philips etc.at inside of each business enterprises all to RFID technique it and the application expressed strong interest,throw a person one after another to in great quantities develop budget and released respectively of software or hardware product and system application solution.
Along with the science technical progress,Be a data to collect an automatically identify of the way's technique to get a fast fierce development,among them applied more and more be subjected to concern in the RFID technique of the logistics and the supply chain realm.The flourishing nation has already applied to the management,safety management...etc.of the management,ancient books of the circulate of library to this technique.Currently American large logistics company,retail store,medicine companies all is continuously trying out this kind of correspondence technique of the short distance wireless to be mainly used for controling the quality,amount of the goods or the merchandise and to the stock more accurate,safe and valid management.The RFID of China is applied main concentration at in low frequency realm(work the frequency be small at the 30 MHzs),such as the identity identify,safe control at gate,electronics ticket-purchasing,transportation etc.realm.If can come to hand the function's integration on board to make it become people,the tool of the shopping balance of accounts so moved an operator to hope to acquire new income from the profession cooperation.Future world,RFID will omnipresent.
Such as the United States of the university library has more than 300 houses to apply RFID technique,Singapore own the first overall applied RFID technique of intelligence library etc..The our country is also usher in this technique,in 2006 Shenzhen library already part of pplied this techniques.This technique brought library boundary huge variety and had very vast foreground.
电力英语翻译 英翻中Switched-mode power supplies in variable-frequency
电力英语翻译 英翻中
Switched-mode power supplies in variable-frequency drives often combine good electrical efficiency with generous production of conducted emission.怎么翻译?语言流畅,逻辑清晰
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good electrical efficiency 良好的电能质量!!
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在变频驱动器内的开关电源(基于开关模式的电源供应器)往往结合(具备)了良好的电导率(导电效率)和很大的传导发射量.
conducted emission,简称传导发射(CE)
英语翻译CPU frequency [200]DIMM Voltage [Normal]CHIP Voltage [No
英语翻译
CPU frequency [200]
DIMM Voltage [Normal]
CHIP Voltage [Normal]
AMD K8 Cool&Quet Control [Disabled]
CPU--NB HT Link Speed [Auto]
CPU--NB HT Link Width [Auto]
Current CPU FID:[Auto]
Current CPU VID:[Auto]
Current CPU DID:[Auto]
CPU FREQUENCY锁定了 调不到~怎么办?
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Negative potential frequency beauty and health equipment man
Negative potential frequency beauty and health equipment manufacturers
Guangzhou kaikang Electronic Technology Co.,Ltd.is a high frequency of negative potential manufacturers of beauty care equipment Negative potential frequency beauty and health equipment manufacturers manufacturers
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英语 adverbs of frequency
英语 adverbs of frequency
为什么我的书上 写着
we always report good stories.always 100%
we dont always report good stories.usually
we usually report good stories.often
Do we usually report good stories?sometimes
Youre sometimes in the stories.never 0%
Place adverbs of frequency before the main verb,
except after the verb to be
这都是表示什么啊 谁能用通俗点的话解释下啊 因为我对语法不敏感 脑袋容易卡壳
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Adverb of frequency = (表示)屡次,多次的副词.
always = 总是,(100% 时间);(如果用此字,表示100%的时间都做那件事;)
Usually=一般,(可能80%可能去做)
Often=经常(50%的时间吧)
Sometimes =有时(小于50%,可能20%以下)
Never =从不,从没有(0%)(一次都没做)
把表示多次的副词放在主要动词之前,除非应该放在动词后的.(练习哪些副词应放在动词前,哪些一定放在动词后)
Two-way Frequency Table
Two-way Frequency Table
或者中文是怎么翻译的(不是要直接翻译……)
我是VCE的学生,他不是要换成百分数吗,是哪一个换啊?自变量还是因变量?
jspkyou1年前1
6594545 共回答了16个问题 | 采纳率87.5%
两尾 频数表 是数据统计中使用的东东拉.LZ是不是在用SPSS 小弟我也学艺不精,凭记忆记得貌似是做频数分布概率的表,是指一组样本数据落在组平均数两测的概率.
Learn adverbs of frequency:
雨季中的四叶草1年前4
louie922 共回答了18个问题 | 采纳率88.9%
学习副词的频率
您的支持就是我继续前行及帮助别人的动力 愿您与我一起传播『 爱心 』之种
望采纳↖(^ω^)↗
英语翻译AM-Frequency Sweep TestThe Bohlin’s Dynamic Shear Rheome
英语翻译
AM-Frequency Sweep Test
The Bohlin’s Dynamic Shear Rheometer (DSR) was used to determine the complex
shear modulus (G*) of AM at high and intermediate temperatures.The frequency
sweep test was conducted at frequency levels of 1 Hz through 60 Hz at log-increments
at temperatures of 15,20,25,34,46,58 and 64oC.The test was conducted under the
controlled stress mode.The applied shear stress at each temperature was selected such
that it was within the linear visco-elastic range.The specimen was conditioned by
applying 100 cycles at 10 Hz at one-half the stress level that was used in the test.
AM-Fatigue Test
The test was conducted under stress controlled mode,and a single frequency of
loading of 1.58 Hz was applied at 25oC.Shear stress level of 14,000 Pa was applied on
the AM.The test was terminated at load repetitions of 10,000 cycles.The preconditioning
of the AM was done by applying 200 cycles of loading at a frequency of
10 Hz before conducting the actual fatigue test.The G* was plotted as a function of the
number of load repetitions to identify the fatigue failure in the mixture.
棒棒蛋蛋1年前2
rainwater1982 共回答了19个问题 | 采纳率84.2%
AM-频率席卷试验Bohlin的动态的剪流变计AM的在高和中间的温度方面((DSR)过去经常决定复杂切变模量((G*).频率打扫试验通过60 Hz阿特原木-增加在 15,20,25,34,46,58和64oC的温度方面进行1 Hz的阿特频率水平.被在受制的压力方式下举行测验.这样以致它是在线的有弹性范围以内,在每一温度方面应用剪压力被标本调节在附近10 Hz阿特.一致应用100循环差不多其是的压力的一半使用在朝派试验.AM-疲惫试验试验进行在下面压力受制的方式,和一装载的1.58 Hz的专一频率在25oC是应用.14,000 的剪压力水平在AM上适用.试验结束阿特负担重复10,000循环.使的预先适应AM被应用200系列装载举行真实疲惫测验10 Hz以前的事物的阿特一频率做.G* was阴谋策划负担重复的数目的阿斯一功能在辨认出在混合物中失败.
四维空间的第四个维度是时间,那么五维空间的第五个维度是frequency(频率)?
fengc211年前1
老玩童小扣子 共回答了23个问题 | 采纳率87%
空间只有三维.现代科学是质能方程成立基础上解释宇宙存在很多问题.有很多规定都是错的.光的载体不可能是光子.光的速度也不是载体跑的速度.
1、There is a sound wave,the frequency of the wave f=440Hz,an
1、There is a sound wave,the frequency of the wave f=440Hz,and the velocity V=340m/s,Find the wav
Find the wave length of the sound wave?
v4ly1年前1
芭比红果 共回答了23个问题 | 采纳率91.3%
楼主,这个题的意思是:有个声波,频率为440赫兹,速度为340赫兹,求波长.
波长(那个符号我打不出来)=V*T(周期)=V/f=340/440=0.773m
希望对你有帮助,不懂再问我:)
They came and went with such frequency.with做什么成分,怎么翻译呢,
snailer1年前2
物极必反王小石 共回答了19个问题 | 采纳率94.7%
with短语 做伴随状语,他们以这样的频率来了又走了
movement of the hands of a clock,frequency of vibration,flow
movement of the hands of a clock,frequency of vibration,flow of water in a pipe,
分别是标量还是矢量?
woviolet1年前1
wangkun88 共回答了23个问题 | 采纳率95.7%
我也不会
频率 frequency 如:一个班女生的proportion,出现次品的次数等.
频率 frequency 如:一个班女生的proportion,出现次品的次数等.
请问频率是连续变量还是离散变量?
按理说,算女生的比例,女生人数/全班人数.人数都是离散变量.算出来应该也是离散变量才对.
不过在书上看到 分析频率时 将其看成了连续变量 有点无法理解.
求高手回答.
oo枫林oОぁ…1年前3
zgzjay176 共回答了18个问题 | 采纳率77.8%
从数学概念上说,频率既可以是离散的也可以是连续的.
自然界的频率,都是连续的(频谱,光谱等等).但是在计算机当中通常需要处理的是采样以后的信号,此时通过采样频率得到的是离散的信号.
你说的频率是不同的概念,人数,次数等等是在统计学中的频率--这个是离散的变量.
如果采样频率无限大(比方说在单位的样本里面抽取的数量足够多),离散采样的结果就基本上可以反映样本客观的形态了.
Method for detecting spectral changes in the frequency domai
Method for detecting spectral changes in the frequency domain这句怎么翻译?谢谢了!
chenyiji11年前1
快乐的建立 共回答了21个问题 | 采纳率90.5%
在频率区域内测量光谱变化的方法.
emit:发射frequency:频率speed:速率microwave:微波reflection:反射away fro

emit:发射

frequency:频率
speed:速率
microwave:微波
reflection:反射
away from:远离
一我他1年前1
wwkkpp123 共回答了14个问题 | 采纳率78.6%
试着用通俗的说法表达一下:
在雷达的连续发出的两个全振动之间,是一个周期T0,设第二个全振动返回时间用时为T,则跟第一个全振动反射回的时间相比,第二个全振动全路径增加了2vT时间,即T=T0+2vT/c
把式中的T、T0替换为1/f、1/f0,就可以得到f=f0(1-2v/c)
所以说答案为C.
dc frequency dependent conductivity是什么意思
心水MM1年前2
把你聊湿 共回答了19个问题 | 采纳率89.5%
直流频率取决于电导率.
dc:直流.
frequency:频率.
dependent:取决于.
conductivity:电导率.
far infared radio frequency
让我再爱你1年前1
lizzicdon 共回答了16个问题 | 采纳率87.5%
far infared radio frequency
far infared radio frequency tag
远红外无线射频标签
求英语大拿帮翻一下 Intelligent Fault Diagnosis System for Frequency C
求英语大拿帮翻一下 Intelligent Fault Diagnosis System for Frequency Conversion Speed Control Pump
蓝子夜1年前4
xny2l 共回答了13个问题 | 采纳率92.3%
水泵转变控制智能错误诊断程序
你自己在看看吧,吓翻的,建议你在多问问
grouped frequency distribution 和categorical frequency distri
grouped frequency distribution 和categorical frequency distribution的中文翻译和区别
wgame1年前1
亲亲大自然 共回答了19个问题 | 采纳率94.7%
分组频次分布(grouped) vs 分类频次分布 (categorical )
grouped,例如统计不同年龄对手机的依赖度,由于年龄分布太广,需要把对象的年龄划分为组,即“16-20,20-25,25-30", 然后再统计他们使用手机的频度.
categorical,例如统计血型,把原始数据分成4类,即”A,AB,B,O“,然后进行统计.
英语翻译The frequency oflifetime colorectal cancer cases per 100
英语翻译
The frequency of
lifetime colorectal cancer cases per 1000 years ranged from 7.7 with
colonoscopy to 12.6 with FIT when strategies were perfectly adhered to and from
7.7 to 20.9,respectively,when adherence was imperfect.There were 31.3
lifetime cases of colorectal cancer per 1000 years when no further screening
procedure was performed.
taotaoliquid1年前1
cici209926 共回答了21个问题 | 采纳率95.2%
每1000年里,通过结肠镜检查得知患上终生结直肠癌病例的频率在7.7 到的12.6,这是在精确完善的仪器得到的结果.当仪器还是是不完善的的时候,得到的频率是分别从7.7到20.9.当没有进一步的执行严格筛选的时候,就会有31.3的终生结直肠癌病例.
Frequency-domain spectroscopy 翻译成中文是什么?
tjwxg1年前3
liuxxmm 共回答了20个问题 | 采纳率95%
波谱 频域
haven't had any archives that's been to this frequency
haven't had any archives that's been to this frequency
听写voa时遇到这么一句话:Until now we haven't had any archives that's been to this frequency.
翻译是:截至目前,我们没有任何存档频率如此职高的档案馆.我不能理解那个修饰archives的定语从句“that's been to this frequency”的语法结构,求大神相助.
kissrain9111年前1
超级ff 共回答了19个问题 | 采纳率94.7%
that's been to this frequency的完整形式是,
that has been to this frequency.相当于:
An archive has been to this frequency.
这里的has been to 是已经达到……的意思.
英语翻译顺便Kindly also let us know the frequency and lead time.I
英语翻译
顺便Kindly also let us know the frequency and lead time.
I have dance costume and hairdress to ship,less than 100 kgs.
我为英盲.
t2m31年前1
smilinglight 共回答了13个问题 | 采纳率84.6%
20个整箱或从深圳到印尼巴淡岛
烦请告诉我们周期及提前期
我有跳舞服装和发饰要运送,小于100公斤
comb Two laser combs with different repetition frequency are
comb
Two laser combs with different repetition frequency are used here for determination of the corresponded comb number n and n+m.
在这句里是啥意思啊,实在搞不懂!
sdy741年前1
月古蓝洋 共回答了21个问题 | 采纳率95.2%
译文:
此处用两个重复频率不同的合成激光来确定相应的合成数量n和n+m.
此处的comb是combination的缩写/简称.
comb number是指“合成的数量”
英语翻译The frequency value,however should stay relatively the s
英语翻译
The frequency value,however should stay relatively the same for the clean sensor,and the software uses the stored clean frequency to determine when the sensor is sufficiently clean.
violetkiki1年前5
ybbping123 共回答了21个问题 | 采纳率90.5%
这段话要意译才更易懂:
对正常的传感器来说,该频率值是相对稳定的.软件通过将其与内部存储的正常频率值比对,来判断传感器是否正常.
外企北美定义的工伤有以下三个指标,Incident Rate,LWDC (Frequency) Rate,DART Ra
外企北美定义的工伤有以下三个指标,Incident Rate,LWDC (Frequency) Rate,DART Rate
外乡小丫头1年前1
fox931259 共回答了19个问题 | 采纳率94.7%
第一个是事件发生率,长时间工作的热切度冷凝速度,猛增加工作量的完成工作的速率.
英语翻译The objective of this tutorial is to study the frequency
英语翻译
The objective of this tutorial is to study the frequency distribution of different air pollutants.Compute and plot the frequency distribution of RSP,SO2,NO2 for:
(i) Hourly average data (for the year 2012)
(ii) Daily average data (for the year 2012)
(iii) Monthly averaged data (for the year 2001 to 2012)
(iv) Yearly average data (for the year 2001 to 2012),(only 13 data points)
Repeat part (iv) again using running average (prepare a column of daily average from 2
Jan 2011 to 31 Dec 2012,then average from n = 1 to 365 days and assign this average
as the yearly average at 1 Jan 2012; repeat for n = 2 to 366 days and so on,then you will get about 365 yearly averages).
不明白第(iv)部分要我干什么,就翻译这部分就行了.
蓝色梦想1年前2
cc芦苇 共回答了20个问题 | 采纳率90%
不用感谢我我帮你把所有的翻译出来:
本教程的目的是研究不同的空气污染物的频率分布.计算和绘图的悬浮粒子,SO2的频率分布,NO2:
(我)平均每小时的数据(为2012年)
(二)每日平均数据(为2012年)
(三)月平均数据(今年2001到2012)
(四)年平均数据(今年2001至2012),(13个数据点)
重复第(四)再次使用的滑动平均(2制备柱日平均
月2011日至2012月31,那么平均从n = 1到365天,平均分配这
由于每年平均1月2012;重复n = 2至366天等等,那么你将获得约365的年平均值).
deviation of power frequency component
deviation of power frequency component
DPFC
xuze1231年前1
xiaolin2005 共回答了12个问题 | 采纳率100%
这是沈国荣院士提出的:“工频变化量”
英语翻译When VFB is less than 0.4V,the switching frequency will
英语翻译
When VFB is less than 0.4V,the switching frequency will fold back to 50kHz to reduce the minimum on-cycle.
shenweilove1年前1
雨垂阡陌 共回答了13个问题 | 采纳率92.3%
当vfb低于0.4v时,转接频率将会降至50khz来降低周期下限.