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The American baby boom after the war made unconvincing U.S. advice to poor countries that they restrain their births.

战后美国婴儿数量的增长使得美国向贫穷国家所做得他们限制人口增长的报道变得不足以令人相信。

The American baby boom after the war made unconvincing U.S. advice to poor countries that they restrain their births.

美国战后的婴儿出生高峰使人很难相信它们给其他不发达国家的抑制出生率的建议。

The American baby boom after the war made unconvincing U.S. advice to poor countries that they restrain their births.

战后美国出现婴儿出生高峰，使美国向贫穷国家提出的节制生育的意见缺乏说服力。

The American baby boom after the war made unconvincing U.S. advice to poor countries that they restrain their births .

战后在美国出现生育高峰，使美国向贫困国家提出的节制生育的建议显得苍白无力。

Based on the analysis of the process of regenerative braking,this paper put forward a new method to restrain the pumping voltage by changing PWM ratio.

文中通过对再生制动过程的分析，提出了通过控制占空比的办法来抑制泵升电压。

With analysis on the control model, an improved automatic tuning method for arc-suppression coil is proposed, that is: adopting voltage feed forward control to restrain interfere of 50Hz displacement voltage, which can improve the characteristic of the injected signal significantly, make the injected signal without reference to unbalanced network and neutral displaced system. Another innovation is detecting the magnitude of neutral point signal-frequency voltage to judge the resonant state, which improves the sensitivity and accuracy of resonant judgement effectively.

基于对控制模型的分析，提出了一种新的注入变频信号的消弧线圈自动调谐方法：通过电压前馈校正控制的引入，有效抑制了50Hz工频电压对注入信号的干扰，使得注入信号不受电网不对称及中性点位移电压的影响；提出以中性点注入信号电压幅值最大做为新的谐振判据，有效提高了谐振状态判断的灵敏度和准确度。

The purpose of this paper, is to probe into a target mode and to put forward a concrete countermeasure, which can restrain village and township industry to take the road of environment protection and sustained development in their development conscientiously.

本文的主要目的，在于探讨使乡镇工业在发展中自觉走上保护环境和可持续发展道路的目标模式及具体对策。

The experiment shows the growth speed of bacteria in damp environment is 50 times higher than that in dry environment. The towel heating rack can effienciently restrain the growth of bacteria in towel and underwear to play an important role in protecting the health of people. The quick-dry towel heating rack self-developed and manufactured by us is very widely used at house, department, villa, restaurant, hotel, bath centre, beauty parlor etc.

经试验证明细菌在潮湿的环境下生长速度是干爽环境的50倍左右，我们的产品能有效抑制毛巾、内衣上的细菌滋生，从根本上呵护家人的健康起到关键的作用；我公司自主研发生产的电热快干式毛巾架应用非常广泛，适用于普通家庭、高尚住宅、公寓、别墅、酒店、宾馆、医院、洗浴中心、美容院等场所。

Three-phase three-line shunt Active Power Filter can be used to restrain harmonic currents and compensate reactive power current on-line.

三相三线并联有源电力滤波器能够实时的补偿谐波电流和无功电流。

We still did not change this end, basically stem from at 2 o'clock: The first, it demonstrates governmental determination, should mix control prices restrain inflation to serve as the first job that the government works this year.

我们依然没有改变这个目标，主要出于两点：第一，它表明政府的决心，要把控制物价和抑制通货膨胀作为今年政府工作的首要任务。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。