机械式计算器比算盘到底优势在哪儿?

格式有点差,见谅见谅.
Abstract: The Exploration of the Image
Strategy of Ancient City with a Canal does researches on the image strategy of
the ancient city with a canal with three aspects consisting of the recognition
system of behavior, the recognition of idea, and the recognition system of
vision. The recognition of behavior shows the historic culture and modern
characteristics of the canal, such as Chiarnlurng's tours to southern part of China, the
contemporary expo of non-material cultural heritages and the university
students' fairs of innovation and so on. Those are "vivid business
card" of the ancient city with a canal. The recognition of idea is unique
too: Tai'erzhuang is the only city with relics of World War II, its most
complete scenery of the canal in modern times is the highlight of extending its
influence. However, there is a lack of the recognition system of vision, it's
hard to construct a whole impression of the ancient city without it. Therefore,
the recognition system of the ancient city with a canal is fully redesigned to
make the whole image perfect and to improve the competitiveness and brand image
in the tourism market.
Keywords: the ancient city with a canal, image strategy, recognition of idea, recognition of behavior, recognition of vision

　　Abstract
　　Traditional mechanical speedometer output power from the wheels,worm gear drive shaft driven by the flexible shaft tip synchronous rotation,so that the other side of the fixed and flexible shaft of the permanent magnet synchronous rotation followed,resulting in rotating magnetic field of the magnetic field in the rotating disk,it disk rotation speed so that,together with the table pointer to the occurrence of the deflection.When the electromagnetic torque and resistance torque generated by the spring balance,the indicators remain at a deflection point of view.Pointer deflection is proportional to angle and speed,so that its speed can be used.
　　Mechanical defects in the speed table is obvious.As the dial indicator shaft deflection is proportional to the degree of rotation of the magnetic force generated,when a lower speed,the magnetic force smaller,with larger fluctuations in speed changes.Therefore,the low-speed table pointer when the swing's intense,measurement and display accuracy is not high.The rear engine vehicle,the speedometer pointer to the deflection by the transmission power transmitted by flexible shaft,such as driver's cab,a long flexible shaft arrangement is bound to,how long will such a rotating shaft from the structural arrangement of properly,is certainly a very difficult task.In addition,the traditional mechanical speedometer all the defects,the instrument has gradually been eliminated
　　This article describes the design of the speed and odometer to the smallest single-chip microcomputer system and the Hall sensor at the core.Different speed sensor into the different frequency pulse signal input to the control and calculation of single-chip,and then show that the use of LED modules,making the speed of electric bicycle mileage data and visual display to the user.
　　The system by the Hall sensor,RC filter circuit,microcontroller AT89S8252,systematic LED display module,data storage circuit.Hall sensor which includes signal amplification and waveform shaping.Treatment of test signals to enlarge the purpose of treatment is to reduce the magnitude of the signal measurement requirements; wave transformation and wave shaping circuit is used to convert the amplified signal can be connected with the single-chip TTL signal; through the MCU can set up internal Timer T1 input pin T0 pulse control,this can be calculated accurately pin T0 added to the unit time detected pulses; design speed display using LED modules,obtained through the conversion rate of mileage using I2C bus and through E2PROM to store not only save the required mouth-line single-chip microcomputer and peripheral devices,as well as simplifying the display part of the software programming
　　In this paper,among the first to design the necessary equipment odometer detail of the design problems are described; the latter part of the hardware and software design and the realization of made a serious analysis; and then gives the system modeling process and the corresponding system model,on the basis of a control simulation,and simulation results are compared.
　　The odometer of the design is simple in structure,low costs,and show the clear advantages of stable and reliable.And can be expanded to include the function of table speed,and more convenient to understand the situation you are now.
　　Key words:single-chip,LED digital tube,Hall sensor,EEPROM memory.

mechanical 机械式
static,例如：静液式传动系：static-hydraulic transmission
electrical 电力式例如 电力式脉动器：electric pulsato

选D
管理层次少而管理宽度大的组织结构被称为扁平式结构.

解题思路：（1）当电位器R接入电路的电阻R₂为20Ω时，根据电阻的串联和欧姆定律求出电路中的电流即为通过电阻R₁的电流；
（2）当电位器R接入电路的电阻R₃为10Ω时，先根据串联电路的特点和欧姆定律求出电路中的电流，再根据欧姆定律求出小灯泡R₁的电压．

（1）当电位器R接入电路的电阻R₂为20Ω时，
∵串联电路中总电阻等于各分电阻之和，且串联电路中各处的电流相等，
∴根据欧姆定律可得，通过电阻R₁的电流：
I=[U
R1+R2=
6V/10Ω+20Ω]=0.2A；
（2）当电位器R接入电路的电阻R₃为10Ω时，
电路中的电流：
I′=[U
R1+R3=
6V/10Ω+10Ω]=0.3A，
小灯泡R₁的电压：
U₁=I′R₁=0.3A×10Ω=3V．
答：（1）当电位器R接入电路的电阻R₂为20Ω时，通过电阻R₁的电流为0.2A；
（2）当电位器R接入电路的电阻R₃为10Ω时，小灯泡R₁的电压为3V．

点评：
本题考点： 欧姆定律的应用；串联电路的电流规律；电阻的串联．

考点点评： 本题考查了串联电路的特点和欧姆定律的应用，是一道较为简单的应用题．

能动电表的话,让电表转慢有几种方法
1,改电压线圈的电压
2,改电流线圈圈数
3,改数字计量齿轮
4,改转盘轴齿轮变比（此招最绝,只要看不出表拆过的破绽,专家也难查出）
5,控制电表内部用电（此法只可控制电表的转和停,不能快慢）
6,其它方法

不估读,和读电子表一样,只不过秒表分为内外两个刻度盘,内盘每格是30秒,外盘一周是30秒,只要把两个的读数加起来就可以了

707.6；220

解题思路：由题中给出的电容器的决空式可求得电容器的电容；根据题意可知按下后的电容器的电容，从而由决定式求出按下的距离．

由C=ɛ₀[s/d]可得：
C=
9×10−12×50×10−6
0.6×10−3=0.75×10^-12F=0.75pF；
电容器变为0.75+0.25=1×10^-12F；
由C=ɛ₀[s/d]可得：
d′=
9×10−12×50×10−6
0.50×10−12=0.45mm；
故应按下0.60-0.45=0.15mm；
故答案为：1；0.15．

点评：
本题考点： 电容器；常见传感器的工作原理．

考点点评： 本题考查对电容器的认识，注意应通过题意明确电容器的决定式，同时注意题目中的单位换算．

线性传感器

因声音可以在固体中传播，并且声音在固体中传声的能力比空气中强，因此将手表放在枕头下面，能够清楚地听到手表的“嘀嗒”声；
故选B．

不变,摆锤的速度只和摆长和当地的重力加速度有关,你处在的地理位置不变,重力加速度就不变,你没有加长过钟摆的摆臂,他的速度也不变.至于摆锤的重量,他是不会影响到单摆的摆动速度的. 单摆做简谐运动的周期跟摆长的平...

解题思路：当轮胎有了磨损后，行驶相同的路程，车轮转动的圈数偏大，据此得出的里程数和时速都要偏大；
此车从北京驶往上海，整个路程知道，因为速度表上指示的时速偏大，根据速度公式判断估算的时间和实际用的时间的关系．

如果轮胎有了磨损，轮半径减小，行驶相同的路程，车轮转动的圈数偏大，所以根据圈数测得的里程数和时速都要偏大；
∵v=[s/t]，
∴t=[s/v]，
∵从北京到上海的路程知道（准确），速度表上指示的时速偏大，
∴估算的时间比实际用的时间要小．
故答案为：小于；小于．

点评：
本题考点： 速度公式及其应用．

考点点评： 本题考查了速度公式的应用，知道里程表的原理，确定轮胎磨损后，得出的里程数和时速都偏大是本题的关键．

C势能,其实发条和弹簧一样,旋紧发条和压缩弹簧是一个道理,所以是势能

建议您手錶的新镜面,到一般的钟錶店就可以帮您解决了不须要到宝岛的品级去更换,因为不会很困难的技术与材料所以货比三家不吃亏,一般钟錶店的师傅,换普通的玻璃镜面相信300元是OK的唷 查看原帖

三、Contrast mechanistic and organic organizations
Four contingency factors of organizational design：organization's strategic,scale,technology,environmental uncertainty.There are two types of organizations,mechanical organization and organic organization .①Mechanical organization is a rigid tight control structure.Organic organization is a flexible structure with a high degree of adaptability .②Mechanical organization is highly specialized.But Organic organization is cross-functional teams.③Mechanical organization is rigid sector partition.Organic organization is cross level team.④Mechanical organization is clear chain of command.flow of information in organic organization is free.⑤Mechanical organization is centralized.Organic organization is decentralized.⑥Mechanical organization is highly formalized.Organic organization is lower formalized.
楼主看好的话要采纳哦.

像你这样的内容 百度里帮你做的人肯定会非常少 建议你去威客网 寻求帮助 那里面精英和人才都很多. 而且是有偿劳动,参与的人也会多.

1.It isn't difficult to meet your requirements.
2.He is the only one who knows this.

爱迪生 重要发明成就：同步发报机、改良电话机、留声机、电灯、复印机电、电刑.
1868年10月11日,发明“投票计数器”,获得生平第一项专利权.

C.

subway ['sub·way || 'sʌbweɪ]
n. 地道, 地铁
先读sub 再度way
萨卜外 注意重音在前,卜弱读 轻轻的带过就可

解题思路：解决此题要知道：声音的传播是需要介质的，它既可以在气体中传播，也可以在固体和液体中传播，但不能在真空中传播．

因声音可以在固体中传播，并且声音在固体中传声的能力比空气中强，因此将手表放在枕头下面，能够清楚地听到手表的“嘀嗒”声；
故选B．

点评：
本题考点： 声音的传播条件；音调．

考点点评： 本题考查了声音传播的条件；注意声音可以在介质中传播，而且一般在固体、液体中效果要比在空气中好．

你看看离合器好不好

属于比较测量法（间接测量法）、接触测量法.比如,用块规组成直径尺寸,用百分表在其上调零,再用百分表测轴的直径,通过读数差确定直径数值.测量力就是百分表的“压表”力.百分表可以装在高度游标卡尺上,在平板上完成测量操作.

内部电池串在表头上,黑笔是电池正极

对称,平衡.平衡时,砝码与被称物重量一致.

　　机械性与有机性组织结构,又称机械/有机系统论.
通过机械与有机性组织结构（Theory of Mechanistic and Organic Systems）,Tom Burns和G.M. Stalker提供了一个根据组织外部环境不确定程度来设计组织结构的思路. 在《革新的管理》（The Management of Innovation）一书中,他们对机械式组织系统和有机组织系统的主要特征进行了表述：

How I wish I can live with you
till the end of the life
But ,what we lost never come back
No matter how sad we feel
I miss you at that time
The one in sunshine
翻译的时候读您的原文越想越觉得这种深深的遗憾很令人难过,不小心竟然读哭了orz,觉得自己翻译不过来,但是又忍不住写了一段留念.不好意思占了地方.

1.Mechanical type
2.hydraulically mechanical type
3.hydrostatic type (hydraulic capacity type)
4.Electric type
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带 互感器么 ？例 三相四线有功电表机械表，3*15（60）A表示三相电源，标准电流为15A，最大电流为60A，3×220/380V表示三相，每相相电压为220V，线电压为380V，800r/kw·h表示为每度电转800圈。电表读数为电表上直接读数，红的为小数点后数字 如果有互感器 要乘以互感器的倍数...