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circuit
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  电路
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  回路
    The Calculation Methods of Electrical Quantities of EHV Single-tower Double Circuit Transmission System
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    Analysis of Control Circuit Interference for a 500kV Substation Circuit Breaker
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    Analysis of Two-parameter TRV and Calculation of Circuit Parameters in Short-circuit Test
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    Dynamic Analysis of Three-Phase Magnetic Amplifier of the Transductor Type with Bridge Rectifier Output Circuit and Control Circuits Connected in Parallel
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    Use of the Microcomputer-aided Experimental Design Method in Solving the Problems of Over-tolerance of Circuit Resistance
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  “circuit”译为未确定词的双语例句
    Study on the Reliability of Miniature Circuit Breakers
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  circuit
Some combinatorial optimization problems arising from VLSI circuit design
      
This paper is basically a survey to show a number of combinatorial optimization problems arising from VLSI circuit design.
      
A packing of the complete directed symmetric graph DKv with m-circuits, denoted by (v,m)-DCP, is defined to be a family of arc-disjoint m-circuits of DKv such that any one arc of DKv occurs in at most one m-circuit.
      
According to different mechanics and analytical models, end force resulting from open magnetic circuit of PMLSM was greatly decreased by optimizing the length of the PMLSM mover.
      
The coupling ratio of the two MMI couplers deviates from 50:50 but the deviation is nearly the same, which is decided by good uniformity of semiconductor planar lightwave circuit (PLC) process.
      
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It is well know that symmetrical components are very useful in nubal anced voltages, short circuits and open circuits calculations. But under special conditions, special technique, such as modified symmetrical components, must be used in order to .meet special requirements. This paper illustrates a method of modified symmetrical components to analyze the operating characteristics of an inverted Y-connected induction motor find shows how the trick is applied.

对称分子,(Symmetrical components),对於电压不均及意外短路(Shortcircuits)及断路(open circuits)等之计算,极感方便,早为吾人所熟知,无庸赘言.然遇特种问题时,必须随机应变,以期达到融会銮通之效.本文即采用“变通对称分子”,(Modified Symmetrical components),分析普通三相感应电动机,在倒接Y式情形下之运用效能,并示其巧妙之处.

An experimental verification of the theoretical peak current equation forreversible electrode reactions of the Randles-Sevcik oscillopolarography, i_p=Kn~(3/2)D~(1/2)m~(2/3)θ~(2/3)α~(1/2)cμΑ, is carried out with both single- and multisweep methods. Themultisweep method is essentially that of Delahay, while a simplified circuit isdevised for the single-sweep procedure. The constant K in the above equation has been worked out by Randlesand Sevcikc, but their values differ by some twenty-one percent. Experimentalresults...

An experimental verification of the theoretical peak current equation forreversible electrode reactions of the Randles-Sevcik oscillopolarography, i_p=Kn~(3/2)D~(1/2)m~(2/3)θ~(2/3)α~(1/2)cμΑ, is carried out with both single- and multisweep methods. Themultisweep method is essentially that of Delahay, while a simplified circuit isdevised for the single-sweep procedure. The constant K in the above equation has been worked out by Randlesand Sevcikc, but their values differ by some twenty-one percent. Experimentalresults as to which K value is correct have been contradictory. The authorspoint out that Sevcik's value of K is too low, due to the error in choosing too largea unit in his numerical integration. By taking smaller units and reperformingthe integration, the K value increases and approaches that of Randles. Thus thecorrectness of Randles' K value is ascertained and this value is used in calculatingthe theoretical slope. Their single-sweep results, with concentrations from 2×10~(-4) to 1×10~(-3) m/l andα~(1/2) from 1 to 4 volts/sec, agreement between experimental and theoretical slopesis obtained in the case of Tl~+ in m NaCl. In the case of Cd~(++) in m NaCl, experi-mental results deviate from the theoretical value, and the deviation increases withincreasing c and α~(1/2). Contrary to an unproven idea of Delahay, i_p obtained bymultisweep method is higher than that by the single-sweep procedure. However,in calculation of the theoretical values, a value of 15.0×16~(-6) obtained by polarLographic method is used for D of Tl~(+) in m NaCl. The use of the value of Dat infinite dilution is thought to be unjustified. If a D value of 15.0×10~(-6) is used,Delahay's results of Tl~+ in KNO_3 would be higher than the theoretical equationinstead of agreeing with it. This fact seems to support the findings of this paper. Various methods of correcting for capacity currents are compared and discus-sed. The authors point out that at α~(1/2) less than 2 volts/sec, the method of drawingan hbrizontal line introduces no appreciable error while at, high α, various methodsyield different results. This fact lowers the accurraey of data obtained at high α. The iR drop in the electrolytic cell and on the series resistance causes themeasured α to be different from the a actually applied on the drop electrode. Anelementary approximate correction of this effect is mentioned. Results after thiscorrection show that the deviation of Cd~(++) from theoretical at high c and α maybe due partly to this effect.

(1)以单波法及多波法验证Randles-Sevcik示波极谱理论公式之i_p~c及i_p~α~(1/2)关系,多波法用Delahay线路,单波法则用简化线路。单波法之结果,对亚铊离子在m氯化钠中,在2×10~(-4)~1×10~(-5)m浓度,α~(1/2)为1及4伏特/秒,实测结果和理论符合。镉离子在m氯化钠中,实测结果与理论有偏差,偏差随浓度及α~(1/2)加大而加大。多波法之i_p实测值高于单波法。 (2)在计算理论曲线时,作者肯定Sevcik之系数过低而采用Randles数值。亚铊离子于m氯化钠中之扩散系数D,采用极谱法测得之数值15.0×10~(-6)而不用无限稀时之D值(20.0×10~(-6))。 (3)在α~(1/2)低于2伏特/秒时,可用画水平线法扣除电容电流。在高α时各种扣除电容电流方法所得结果不同,影响结果之可靠性。 (4)电解池线路上之iR降使加在滴汞电极上之α改变。这种改变使实测i_p值偏低。作者曾作初步近似修正,结果说明α及浓度大时,镉离子实测数据对理论的偏差的一部分可能是由于iR降的作用。

1) In this article a description of mathematical analysis of initial distribution of Voltageand surge transter in the 3-winding antotransformer (method superposition) is given. 2) The effect of the states of Lower voltage winding on the surge phenomena in thehigher and central voltage windings is given. 3) If the Lower voltage winding is eonnecred in parallel to a R-C circuit, the potentialof the winding to earth (when atmospheric and switchng surge inpinged on the winding) isdecreased. 4) The study of...

1) In this article a description of mathematical analysis of initial distribution of Voltageand surge transter in the 3-winding antotransformer (method superposition) is given. 2) The effect of the states of Lower voltage winding on the surge phenomena in thehigher and central voltage windings is given. 3) If the Lower voltage winding is eonnecred in parallel to a R-C circuit, the potentialof the winding to earth (when atmospheric and switchng surge inpinged on the winding) isdecreased. 4) The study of the effect of the high-frequency damped oscillation, which superposed onthe IR drop of an arrester, on the surge phenomena in 3-winding autotransformer. 5) The gradient voltage in the autotransformer is contfolled ty the Law of Freed(U. S. S. R.)

本文中给出高压教研组在电磁模拟上进行波过程研究的一些结果: 1)可以根据文献〔4,5〕及叠加法求得三绕组,高压进线位于绕组中部的自耦变压器中的起始电压分布及电容分量的过渡。2)研究了低压绕组的几种状态对高、中压绕组内波过程的影响。3)可利用与低压侧并联的R-C回路来减少开断空载变压器的过电压及大气过电压作用时绕组的对地电位。4)研究了PB动作后所产生的高频振荡对波过程的影响。5)梯度电压遵从弗里得理论。

 
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