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Optical Switches and Variable Optical Attenuators are key components in fiber-optic communication systems and Micro-Electro-Mechanical Systems is a promising OSW technology.

光开关和可变光衰减器是光通信系统中的关键器件，而微电子机械系统技术是一种具有发展前景的光开关技术。

The switches are driven out of phase and pulse-width modulated to regulate the output voltage.

开关的驱动不同相，进行脉冲宽度调制以调节输出电压。

The MagSwitch electronic pressure switch is used in locations where mechanical pressure switches have long since been overtaxed.

磁控电子压力开关可用于很久以来对机械式压力开关来说负担过重的地方。

It has been deployed on high-end Internet servers, desktop machines, and on palmtop computers, set-top boxes, in network switches, and elsewhere.

它活跃在高端服务器，桌面系统，掌上电脑，set-top boxes，网络交换机以及其它的一些领域。

The ways of parallel resonant DC link and three-level control strategy were used in this power amplifier circuit. Output current ripple of power amplifier can be reduced as three-level power amplifier, all of power switches work on and off under the zero voltage switching or zero current switching, loss of switching and current ripple interference effectively reduced.

该电路在功率放大器三电平控制策略的基础上应用了并联谐振直流环节，保持了三电平功率放大器输出电流纹波小的优点，同时功率器件均工作在零电压或零电流条件下，开关损耗、电流纹波干扰有效地减小。

The phase switches of the proposed SRM converter turn on in zero voltage switchingmode by making use of a kind of parallel quasi resonant DC link circuit,and turn off in ZVS mode by adding a shunt-wound capacitance to every phase switch.

电路采用并联型准谐振直流环节为SRM相开关开通提供零电压条件，给相开关并联电容器则保证了相开关的零电压关断。

As shown in Fig. 1a, the colossal magneto-resistive oxide La2?2 x Sr1+2 x Mn2O7 ( x =0.36,0.38) shows a metal – insulator transition at a T C just below 130 K, at which point the system also switches from being a Ferro magnet to a Paramagnet.

就像图1a 所示那样庞磁电阻氧化物 La2-2 x Sr1+2 x Mn2O7 ( x =0.36，0.38)巧好在低于130K 的 Tc 温度下显示出金属-绝缘体转变现象，也就是在这个温度下，系统从铁磁相变成顺磁相。

Company nature: domestic production and trade enterprises operating range: Cabling Products (Crystal first, network lines, light stick, coaxial cable, patch panel, sub box, security card, information boxes, cabinets, network modules, information panels, switches, light stick in the total allocation), etc. Product Factory Area: 40,000 square meters Number of employees: 300 people, the history of the development: Shanghai Pu Co., Ltd. Founded in 1998, located in Shanghai Pudong Sunshine Boulevard, covers an area of 40000 square meters, more than 4,000 square meters of standard factory buildings.

公司性质：内资生产型及贸易企业经营范围：布线产品（水晶头，网络线，光扦，同轴线缆，配线架，分线盒，保安牌，信息箱，机柜，网络模块，信息面板，交换机，光扦总配）等产品厂房面积：40000平方米员工人数： 300人发展历史：上海万普有限公司创立于1998年，座落于上海浦东阳光大道旁，占地面积40000平方米，标准厂房4000余平方米。

Our company established in 2003, is Sichuan Panxi area networks, security systems integrators, including the network system security system set and two operations, the main business network system has a full range of optical products: fiber optic transceivers, fiber optic splitter, fiber jumper, fiber optic MODEM, fiber-optic switches, fiber-optic conversion head, optical fiber and cable, fiber optic single-mode to multimode, fiber couplers, optical terminal boxes, etc.; integrated wiring a full range of products: patch panel, modules, panels, cable, crystal head, of the rationale for line planes, jacket, etc.; switch various modules: MINI GBIC, GBIC, Gigabit Fast fiber module; Fluke Corporation is qualified network monitoring equipment distributors, large and medium-sized enterprises to be able to provide network surveillance testing, fault location, network performance evaluation, as well as third-party network maintenance.

本公司2003年成立，是四川攀西地区网络、安防系统集成商，包括网络系统集和安防系统二大业务，网络系统主要业务有光纤全系列产品：光纤收发器，光纤分路器，光纤跳线，光纤MODEM，光纤交换机，光纤转换头，光纤光缆，光纤单模转多模，光纤耦合器，光端盒，等；综合布线全系列产品：配线架，模块，面板，网线，水晶头，理线架，护套，等；交换机各种模块：MINI GBIC ， GBIC ，千兆百兆光纤模块；公司是FLUKE 网络监控设备的合格经销商，能够为大中型企业提供网络监控测试，故障定位，网络性能评估，以及第三方的网络维护。

The phase difference between neighboring switches can be predicted and controlled.

相邻开关之间的相位差可加以预测和控制。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。