文章分析了斩波串级调速电动机的机械特性及节能原理，建立了调速电动机的动态仿真模型。
In this paper, the mechanical characteristic and energy-saving principle of the chopping cascade speed regulating motor is discussed, and motor's simulation model is created.
其次采用了两种不同方法对斩波串级调速系统的斩波回路进行了建模和分析，并得到斩波双闭环控制结构图；
Then two different method is given to analyze chopper and mathematics model is based, so double-close-loop control chart is got.
通过从如何减小逆变器的装置容量入手，根据矿井提升机的工艺特点，给出了斩波串级调速系统逆变变压器容量的设计方法。
From the angel of minimizing the inverse transformer capacity, a method to design inverse transformer capacity based on the technical features of mine-well hoist was given.
数周以后，该中心的科学家们注意到在洛杉矶出现相似的一连串被称为“卡波西氏肉瘤”的罕见癌症。他们怀疑有一些奇怪而严重的什么东西正在发生。
When, a few weeks later, its scientists noticed a similar cluster of a rare cancer called Kaposi's sarcoma in San Francisco, they suspected that something strange and serious was afoot.
所谓的波托马河流域初选成就了奥巴马的一连串胜利：他以超过对手29%的得票率在弗吉尼亚获胜，在马里兰州时这个比例为23%，在哥伦比亚特区则是轻松的达到了51%。
The so-called Potomac primary completed his winning streak: he won Virginia by 29 points, Maryland by 23 points, and the District of Columbia by the minor matter of 51 points.
通过分析声表面波谐振器对不同激励信号的响应，本文选用正弦脉冲串作为激励信号，来提高系统工作效率和传感距离。
Through the analysis of the response of resonator base on different pumping signals, sine burst is used for pumping signal of the system to improve the efficiency and detecting-distance.
介绍了斩波内馈调速技术，以及与变频和串级技术的比较。
This paper introduces chop feedback speed regulation technique and compares it with frequency conversion and cascade technique.
该结构利用积分面积相等的原则确定开关角，通过串级叠加的方法得到标准正弦波输出。
In the structure, the (equal) integration area method was used to determine the control switch Angle, and the sinusoidal voltage wave was obtained by means of the concatenate superposition.
针对串电阻调速电机车存在的弊端，提出进行斩波调速改造。
In view of the drawbacks existed in speed regulation of electrical locomotive with series resistance, the transformation of chopping speed regulation is put forward.
提出一种在单模光纤正常色散区由连续波产生超短光脉冲串的新方法。
A new method for ultrashort optical pulse train generation from a cw signal in the normal dispersion regime of optical fibers is suggested.
矿用电机车的速度控制方式包括串电阻式、直流斩波式和交流变频式三种。
The mode of speed control for mining tram includes three types of series resistances. Dc chopper and AC converter.
总所周知的“睡眠纺锤波”是一种脑波，它能为睡眠中的人阻隔外界的声音，使人即使听到一连串的噪音也不被吵醒。
Certain brain waves, known as sleep spindles, play a key role in blocking out sound during sleep, allowing people to stay asleep through a barrage of noises.
基于耦合波理论并引入波矢簇的概念，对体全息存储分维复用的串扰噪声进行了分析。
Based on the coupled mode theory, the cross-talk noise in fractal multiplexed volume hologram is analyzed.
文中用半经典理论分析比较了这两种光纤中由于四波混频和互相位调制引起的串扰。
Comparison of crosstalk induced by four-wave mixing and cross-phase modulation in Si-EDFAs and Te-EDFAs is carried out using semiclassical theory.
文中用半经典理论分析比较了这两种光纤中由于四波混频和互相位调制引起的串扰。
Comparison of crosstalk induced by four-wave mixing and cross-phase modulation in Si-EDFAs and Te-EDFAs is carried out using semiclassical theory.
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