大功率的

In order to overcome the shortcoming of the passive power filter and parallel active power filter, a new parallel hybrid active power filter on base of the conventional parallel active power filter is proposed in this thesis.

本文针对无源滤波器和单独使用的有源滤波器的缺点，对传统的并联混合有源电力滤波器进行创新性改造，提出一种适用于大功率场合的谐波和无功综合治理的新型并联混合有源电力滤波器。

Someone said that having the technology of super horologe is better than LiuBei getting KongMing, for KongMing had only helped LiuBei to gain one third of the Eastern Han Dynasty, but the former will help you to maintain a world market of horologe.

为配合国家电改造、西部大开发以及居民购房和大功率家电的使用，将形成对电表的巨大需求市场以及对电的严格管理制度，专业的防窃电技术，占据绝对的市场优势。

While speaking highly of railway's achievement since the 16th CPC National Congress, Chairman Jia noted that the Chinese people have built the world's top-notch QTR line while relying on our own strength, and Chinese railway people have developed and manufactured 200km/h and 300km/h EMU trains and high horse-power locomotives through introduction, digestion, absorption and re-innovation, thus making a major contribution to the building of an innovation-oriented country.

他对党的十六大以来铁路工作取得的成绩给予充分肯定，指出，中国人依靠自己的力量，建设了具有世界一流水平的青藏铁路；通过引进消化吸收再创新，设计制造了达到世界先进水平的时速200公里、300公里动车组和大功率机车，中国铁路为建设创新型国家作出了巨大贡献。

Through the study of different structure forms of the cylinder head, influences of different types of structure schemes of the floor plate, head plate, inlet and exhaust ports as well as of jobbing sheet's different locations on the changing disciplines of overall stress level were achieved.

通过对气缸盖结构型式的研究，得到了典型高速大功率柴油机气缸盖的底板、顶板、进气道、排气道采用不同的结构型式，中隔板处于气缸盖的不同位置时，气缸盖整体应力水平的变化规律。

In this paper the layout design of a power transistor for motor drive IC chip has been present and how to reduce the parasitical parameter of layout is described in detail.

因此在它的驱动芯片版图设计中，传统的大功率输出管的设计并不能解决电机固有特性所带来的瞬间高压和大电流所造成的影响。

Many domestic and foreign companies and universities are making research on the architecture and system of RF power amplifier.

本文所讨论的射频预失真放大系统的设计正是为更好的实现射频大功率放大器的线性化而进行研制和开发，特别是针对WCDMA基站中的应用。

The high efficiency and high power semiconductor laser with multi-active regions, which are integrated by reverse biased tunnel junctions can resolve the heat problems in theory and overcome these shortcomings. So study and improve the novel laser have a important significance.

通过反向偏置的隧道结将多个有源区级联起来的新型高效大功率半导体激光器很好的解决了传统激光器存在的问题，研制并改进这种新型激光器有着重要的意义。

Heat treatment techniques which simulate the welding process of electromotor short circuit ring and short circuit bar are designed based on the actual thermal circulation on the short circuit bar.

根据电机转子导条和端环焊接过程中导条所经历的实际热循环过程，设计了模拟焊接过程的热处理工艺，对大功率异步牵引电动机转子铜合金导条和端环的焊接热影响区的组织和性能进行了研究，讨论了性能和组织的变化规律及其原因。

Sometimes the series and shunt syntony with main system would enlarge harmonics and make things worse. Active Power Filter, as another kind of filter equipment, begin to make use following the advancement of GTR,GTO, IGBT and etc. Theunique advantage of this new setting is dynamic harmonics canceling. Now, the shunt APF is the most widely used one.

进入80年代以后，随着有源滤波技术的不断深入和用户对谐波问题的重视，以及电力电子技术的飞速发展，大功率可关断器件(GTR，GTO，IGBT等)的不断进步，有源电力滤波器(Active Power Filter， APF)作为抑制电网谐波、补偿供电系统无功功率的新型电力电子装置得到迅速发展，其中又以并联型有源电力滤波器的使用最为广泛。

Characteristics of the business has:(1) smart battery design, development, production (the main application fields Laptop batteries, camera batteries, batteries of various instruments and meters, etc.), real-time monitoring of battery capacity, the use of time, the use of frequency, this technology is at the international leading level;(2) a variety of instruments and equipment of the external power supply products, high-power, intelligent, thin and light, no memory effect, multi-channel voltage output;(3) Lithium battery protection circuit, a string, two string, three strings, four string protection circuits can be designed in accordance with the requirements of customers;(4) charger, the company has developed a string, second string, three strings, four strings of different power lithium battery charger and car charger browser; product line:* Ni-MH rechargeable battery Series ------------------------------------* nickel cadmium rechargeable battery Series * Rechargeable lithium-ion battery series ------------------------------------* all Class Series rechargeable battery pack * lithium manganese dioxide battery series ------------------------------------* lithium thionyl chloride battery series argon company spirit of "honesty, technology and innovation" concept, the "quality first, consumers first" concept, is willing to work with all sectors of cooperation, common development and prosperity.

特色业务有：（1）智能电池设计、开发、生产（主要应用领域笔记本电脑电池、摄象机电池、各种仪器仪表电池等），实时监测电池容量、使用时间、使用次数等，此技术目前处于国际领先水平；（2）各种仪器设备的外置电源产品，大功率、智能化、超轻超薄、无记忆效应、多路电压输出；（3）锂电池保护线路，一串、二串、三串、四串保护线路，可以根据客户的要求设计；（4）充电器，公司开发了一串、二串、三串、四串锂电池各种不同功率的充电器和车载充电器；产品系列：*镍氢可充电电池系列------------------------------------*镍镉可充电电池系列*锂离子可充电池系列------------------------------------*各类可充电池组系列*锂二氧化锰电池系列------------------------------------*锂氩硫酰氯电池系列公司本着"诚信为本，科技创新"的理念，贯彻"质量第一，用户至上"的概念，愿与各界人士合作，共同发展和繁荣。

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。