查询词典 alternating current

In company with technological fast hail unfold,electric power electronics, Microelectronic technique cum modern control theory 'away advancement,Again for transducer station indued with high efficiency performance AND favorable control characteristic,For the moment be on the velocity control middle compare much adopt of alternating current motor.

随着科学技术的迅猛发展，电力电子技术、微电子技术及现代控制理论的不断进步，又因为变频器所具有的高效率性能和良好的控制特性，目前在交流电动机的速度控制中较多采用。

As the alternating current cycles back and forth, the resulting variation in the magnetic field sloshes these vortices around within the superconductor, losing energy as heat as they do so.

当交流电的电流发生周期性变化时，随之改变的磁场会使超导体内部的旋涡产生震荡，在此过程中部分能量会以热能的形式散失。

As the alternating current cycles back and forth, the resulting variation in the magnetic field sloshes these vortic es around within the superconductor, losing energy as heat as they do so.

当交流电的电流发生周期性变化时，随之改变的磁场会使超导体内部的旋涡产生震荡，在此过程中部分能量会以热能的形式散失。

The current densityin a wire carrying alternating currentis not uniformover the cross sectionof the wire but is greater near the surface, a phenomenon known as skin effect

集肤效应。载有交流电的导线中的电流密度，在导线的横截面上并不是均匀分布的，而是在表面附近比较大，这一现象成为集肤效应。

Electricity of a current flowing in one direction only; not alternating .

只沿着一个方向的电流；没有交替。

That's because he invented most of the technology we depend on every day, like alternating current electricity, radio, x-ray, etc...

那是因为他发明了绝大多数我们每天所赖以使用的技术，像是交流电、无线电、X射线，等等。。。。。。

One of two types of electricity: Alternating Current; found in homes.

光伏电池以串联方式连在一起组成发电板。

Simultaneously, the exports of ionization rate and nonionzed concentration are set up as a powerful tool for studying thoroughly the freeze-out effect. dN〓/dp and dN〓/dn are neglected in the linearized equation system of the iteration methods of Newton and Gummel, due to having lower 15 orders or more than dN〓/dn and dN〓/dp, thus the computing effort is cut down with no effect on precision. A new cut-off technique is adopted to accelerate the convergence speed, about twice reduced for Newton iteration method and six times or so for Gummel iteration method. The approximate formulae of Fermi-Dirac statistics are also put forward with simpler form and higher precision. 3. A term dependent on time is added to the electron and hole current succession equations respectively. It is only this model that conservation of charge in transient analysis and alternating small-signal analysis at low temperature can be kept by. 4. The performance of SE-PISCES is explained by the simulation example of PISCES-2B, diode.

研究了低温半导体器件模拟的数值方法：对载流子浓度进行了新的归一化；编制了不考虑掺杂所引进的内建电场时的电离率计算程序；由于低温杂质电离率随偏压状态而变化，为此编制了每次求解迭代时的电离浓度计算程序，并将其插入到求解迭代程序中；同时，设置了杂质电离率和未电离杂质浓度的出口点，为更深入地研究冻析效应提供了有力工具；在Newton迭代法和Gummel迭代法的线性化方程组中忽略了dN〓/dp、dN〓/dn，是因为它们比dN〓/dn、dN〓/dp低15个数量级以上，这样减小了计算量又不影响模拟精度；对Newton迭代法和Gummel迭代法采取了新的截断技术，提高了收敛速度，Newton法迭代法和两次左右，Gummel法减少六次左右；给出了表达式更简单而精度更高的Fermi-Dirac积分近似计算公式。

At 400 kilovolts, a standard value for long-distance transmission, an alternating current 30 metres (100 feet) from the ground has a fortieth of the loss of a similar cable at ground level.

在远距离传输的标准电压400千伏下，电缆离地30米（100英尺）时的电量损耗是同样电缆在地面时损耗的四十分之一。

At 400 kilovolts, a standard value for long-distance transmission, an alternating current 30 metres (100 feet) from the ground has a fortieth of the loss of a similar cable at ground level.

远程输电电压为标准值400千伏的交流电离地30米（100英寸）时的损耗是接近地面时的四十分之一。

Who? I never heard of him, Paul said, before asking teammate James Posey if he had heard of him.

赛后，科比说，他一直都是一名非常出色的射手，今天他打得很棒。

When I joined the company, I rotated around the different sections.

我加入这个公司时，轮换过几个不同的部门。