大功率的

Develupmeet of powerful laser devices provides a better basis for surface treatment of automotive parts than ever,Automotive pistun pins and valve tappets made of steel 45# are hardened by laser with chcoen technological parameters,then mierostructure,hardness distribution; wear reeistance,defor-mation and service life are analysed and evaluated.

大功率激光器的发展，为汽车零件表面处理提供了有效的方法。采用选定的工艺参数对中碳钢汽车活塞销和气门挺柱进行了处理，对其显微组织、耐磨性、变形量及寿命进行了综合评价。

Lead al oys as solder for transducers used in high-powered (designated to operate for several hours at acoustic power levels of 125 dB SPL and above) loudspeakers.

用作大功率扬声器（用在长时间操作125分贝以上的音响系统）的传感器中焊料的铅合斤。

The radio knife is high frequency power equipment based on the theory that electricity concentrates on the skin. It can directly cut the tissue, homeostasis and cauterize. The safety requirement of this equipment is very strict because unsafe operation will burn the tissue, cause temporal unaware hurt and even endanger the patient's life.

高频电刀是利用高频电流的&集肤效应&原理，使高频电流对人体组织直接进行切割、止血或烧灼的一种高频大功率电器设备，故其安全性要求极为严格，一旦出现安全问题，将出现灼伤，还可能造成一些暂时难以觉察的影响，甚至导致生命危险。

Mainly engaged in the project are: 1, lithium battery protection board, power type (power tools, electric vehicles, model aircraft) lithium battery protection board; 2, switching power supply, adapters, chargers; 3, high power audio, amplifier, communications power inverter power supply; 4, solar cells program, program charger, portable power supply; 5, special power supply / power supply, as well as smart power management system; 6, LED drivers, all kinds of high-frequency electronic circuit design, update problem-solving / Circuit Design and so on; Electronics 8514C has°load, four-channel Tektronix TDS2014B Oscilloscopes, Tektronix Current Probe, Power Instrument / high voltage tester, spectrum analyzer proposed, frequency meter, signal generator, the high and low temperature environment for the control room and other advanced equipment and a group of highly professional and well-motivated research in science and technology, design professionals; have the ability to achieve all-round, the perfect integration services.

主要经营项目有：1、锂电池保护板、动力类（电动工具、电动车、航模）类锂电池保护板；2、开关电源、适配器、充电器；3、大功率音响、功放、通讯电源、逆变电源；4、太阳能电池方案、充电器方案、便携电源；5、特种电源/智能电源以及电源管理系统；6、LED驱动，各种高频电子电路的设计，更新解难/电路设计等；公司拥有艾德克斯8514C电子负载、泰克TDS2014B四通道示波器、泰克电流探头、功率仪/高压测试仪、频谱分析议、频率计、信号发生器、高低温环境控制室等先进设备和一批专业素质高、干劲十足的科研技术、设计人才；有能力做到全方位、一体化的完美服务。

Passive cooling system is composed of multiple sets of fans, which can remove the heat of LED beads adequately even in high room temperature conditions. Besides, KEY's tooth optical cooling technology, completely solved the high-power LED thermal problems.

目前大功率芯片以1W~3W为主。5W以上的单颗LED全由1W或3W合成，能合成10~50W的单颗灯珠，但其需要超大型散热器加风扇来减少光衰，但散热和光衰还是难以控制，可能在3-5年内也难在技术上解决合成灯珠发热太高的问题。

Through this method,the integral gain varies with the average phase shift between tip speed ratio and power coefficient.

针对传统最大功率点追踪极值搜索法固定积分增益存在的不足，依据不同积分系数对系统的影响，提出了一种MPPT变增益极值搜索法，使积分增益随叶尖速比和功率系数之间平均相位移的变化而变化。

In theory,the blocking circuit for the energy conversion technique and its optimized circuit are described.A two-mode shunt circuit is designed and implemented for an experimental supported cantilever beam.

其中利用分支电路的压电阻尼技术的被动控制技术由于其结构简单，易于实现，不需要大功率能源等优点而广泛的应用于各个工程领域。

To improve the gain and stability of output microwave,an X-band high power coupled cavity traveling wave tube with one RF sever and two RF lumped attenuators is studied.

为提高行波管的增益和输出波形的稳定性，开展了带高频切断X波段大功率耦合腔行波管的研究工作。

Because the price of photovoltaic cell is expensive and conversion efficiency is low presently, the Maximum Power Point Tracking is absolutely necessary, in order to decrease system cost and increase efficiency, The paper focuses on the stand-alone photovoltaic system and analyzes it with theory.

本文以独立光伏发电系统为研究对象，对其进行了理论分析，从系统的参数选择、拓扑结构、控制策略、最大功率跟踪及蓄电池的保护等方面作了详细的分析和研究。

Under the background of High Power Microwave technology, a novel family of waveguides for high power microwave transmission is proposed. Some other new types of guided wave structures formed by some classical geometrical curves are also explored in this dissertation.

在高功率微波技术日益得到重视的背景下，本文提出了一种新的大功率导波结构——五边形波导族，并对利用经典几何曲线构成的几种导波结构作了探索。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。