上电

The switching power amplifier is optimized based on the achievement of electromagnetic force, and the circuit structure of tristate power amplifier with soft-switching is designed. This circuit owns the advantages of reducing the dissipationpower on the power component and improving the speed of system dynamic response, enhancing the stability of the electromagnetic force in the final state, and the nice result is presented by the simulation. The small-signal model of the power amplifier is also established.

在实现支撑所需的电磁力基础上，对开关功率放大器电路进行了优化设计，采用三电平软开关的电路结构，以降低主功率器件的功耗、提高系统的动态响应速度、提高稳态电磁力的平稳性；仿真分析表明可以达到预期的效果；最后还建立了功率放大器的小信号模型，为控制系统的调节器设计提供了依据。

From both the theory analysis and the experiment results, all the factors that can affect the static and dynamic properties of the value system including the unidirection transient flow sensor are discussed. A lots of experiment results show that the value performence is excellent.

在第二章，作者在理论和实验上得到影响和提高包括单向动态流量传感器在内的流量电反馈电液比例二通阀稳、动态特性的各方面因素，大量实验结果显示出该阀优良的性能。

In total,there were 65 cases received prostate operation.43 cases were received electrovaporization of cystitis glandularis,15 cases were received electrovaporization of bladder tumor,3 cases lower urina road narrowness and 2 cases hyperplasia verumontanum.

应用经尿道汽化电切术和双极等离子汽化电切术，分别以5%葡萄糖液和生理盐水作冲洗介质，选择性耻骨上膀胱造瘘，持续低压灌洗，术后气囊导尿管留置5~7天拔管，自行排尿。

It was discussed in the paper the basic electroluminescent theory of polymers as well as the current study and the development trend of electroluminescent polymers and, especially that of polyphenylene vinylene. On this basis, the relationship among structure, solubility and electroluminescent properties was studied.

本文在讨论了电致发光聚合物的基本发光原理并深入分析了国内外有机电致发光聚合物尤其是聚苯撑乙烯的研究现状与发展趋势的基础上，着重研究了PPV衍生物的结构与它的可溶性以及电致发光特性的关系。

The piezoelectricity ceramics application is extremely widespread, themost typical application is the buzzer and the security alarmapparatus, after 素坯 rolls over the ceramics the image formationpaper same thin slice to fire, makes the electrode in its both sides,then the polarization, such ceramics had the piezoelectricity, then itwith the tinsel agglutinated again in together, made a buzzer.

压电陶瓷的应用十分广泛，最典型的应用是蜂鸣器和安全报警器，把陶瓷素坯轧成象纸一样的薄片烧成后，在它的两面做上电极，然后极化，这样陶瓷就具有压电性了，然后再把它与金属片粘合在一起，就做成一个蜂鸣器。

Chlorine atoms were selectively introduced into the chlorin ring based on different reactivity between vinyl group at 3-position and 20-meso position by electrophilic addition and electrophilic substitution using hydrogen peroxide/hydrochloric acid, N-chlorosuccinimide, hydrogen chloride (or concentrated hydrochloric acid) as chlorinating reagent.

以过氧化氢/盐酸、N-氯代丁二酰亚胺、氯化氢为氯化剂，根据3-乙烯基和20-meso-位的不同化学反应活性，通过亲电加成和亲电取代反应，在二氢卟吩环上选择性地引进氯原子，完成8种未见报道的具有叶绿素-a基本碳架的氯代二氢卟吩衍生物的合成。

A new method is described for determining the microwave dielectric properties of solid materials,for example agricultural products,mineral,of known densities from the dielectric properties of pulverized samples measured by employing the short circuited waveguide principle at a few different bulk densities.

本文介绍一个测定不能进行机械加工的&坚实材料&的微波介电特性的新方法。将这类材料研碎，成为&空气－粒子&混合物。应用短路波导方法，在几个不同的混合物&松密度&上测量其介电特性。

Finite element method was used to simulate the stamping process for electrodeposited nickel coating by using a plane model.

采用有限元方法对电沉积镍涂层钢带的冲压成形过程进行了数值模拟，得到了电沉积镍涂层在界面上的应力场、应变场等冲压成形特性。

While high quality deposition from trivalent chromium electrolyte could only be sustained for short periods and thin deposits obtained of decorative value only, it is difficult to substitute heaxvalent chromium plating in engineering electrodeposits by trivalent chromium plating at all.

因此，本文在电沉积出镍-铁合金纳米晶的基础上，采用脉冲电沉积的方法研究了在三价铬体系中获得纳米晶铬和铬-镍-铁合金纳米晶厚镀层的工艺及其基础理论，以期解决三价铬镀液完全代替六价铬电镀的难题。

The material compositions are selected from Pb(Ni1/3Nb2/3)O3-PbZrO3-PbTiO3 family and they are used as the four layers in the new FG piezoelectric actuator.The piezoelectric constants and dielectric constants of the materials are gradated oppositely in the thickness direction, because this special structure of the FG piezoelectric actuator has an advantage over the traditional actuators in internal stress distribution.

这种新型功能梯度驱动器由4种基于Pb(Ni1/3Nb2/3)O3-PbZrO3-PbTiO3系列的材料复合而成，且4层材料的压电常数和介电常数在厚度方向上的梯度变化相反，这种梯度结构能使驱动器结构内部的应力分布优于传统弯曲驱动器。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。