开关

While encapsulating RF MEMS switches in low vacuum diminishes the air damping and improves the switch speed and operation voltage, the performances of a switch is incident to being influenced by outside environment.

可见，RF MEMS开关用低真空封装可以减小空气阻尼、改善开关速度和执行电压的同时，开关的性能却容易受外界环境因素的影响。

In the paper, the principle and matrix description of the switch is expounded, and the aplanatism of signal lights is also testified, and the insert loss and polarization dependent loss is analysed.

本文将阐述光开关的原理与矩阵分析，论证这种自由空间光开关的等程性，讨论新型光开关结构与性能(插入损耗与偏振相关损耗)。

The utility model relates to an appliance switch for controlling temperature The on or off at the predetermined temperature of the heating element switch is controlled by the deformation of the heated bimetallic strip, causing the heating element to heat.

实用新型与开关在发热设备开关被预先决定的温度由激昂的双金属带的变形控制的控制温度的一个装置开关关连，造成发热设备加热。

Such as burning glass electric rice cookers, electric heated glass cookers, electric Niunaibei glass, glass, electric heated rice bags, glass, such as electric ovens A diagnostic radiology, with the ray protective devices, including the limited-hole plate (4), limited-hole plate (1), servo motor, with the upper limit switch (3), limit switch (7), and so on, installed in the activities Bed-shading of the ball before relying on the upper and lower limit switch servo motor control circuits and chain control, automatic transform limited-hole plate position, perspective and point of excess-ray films blocked so that patients and doctors have been reliable protection .

诸如玻璃电热烧锅、玻璃电热暖锅，玻璃电热牛奶杯、玻璃电热恒温电饭包、玻璃电热烤炉等一种放射线诊断时用的射线防护装置，包括方孔限光板（4）、圆孔限光板（1）、伺服电机、上限位开关（3）、下限位开关（7）等，装设在活动床球管遮光器前，依靠伺服电机上下限位开关及控制电路进行连锁控制，自动变换圆孔限光板的位置，将透视和点片时的多余射线遮挡住，使患者和医生都得到可靠的防护。

The technology of flexible electrical switches is to use the high frequency power electronics switches in connection with the electromagnetic switch, associated with the shield method to gain ideal complementary effects.

柔性电气开关技术是将高频电力电子开关应用于电磁开关，以屏蔽方式实现两种技术理想化互补。

The angle grinder of claim 15 wherein the switch lock lever is pivotally coupled to the finger stop protrusion proximate a lower portion of the finger stop protrusion, the switch lock lever comprising an elongated member which in the locked off position protrudes from the pivotal coupling toward the tool handle body and from the pivotal coupling downward from the switch paddle, the switch lock lever being pivotally movable by the user's hand to the operational position permitting movement of the switch paddle toward the handle body and activation of the tool.

该角磨索赔15个，其中开关锁杠杆是pivotally耦合到手指停止凸出近因较低的部分手指停止凸出，开关锁杠杆组成一个细长的会员，其中处于锁定小康位置protrudes从枢纽耦合走向工具处理机构，从关键耦合向下，从开关桨叶，开关锁杠杆正在pivotally动产由使用者手部，以业务许可的移动交换机桨对处理机构和激活的工具。

The study indicates that:install MOA at line side is the most effectiveness method to protect banked switch,keep up the tower dielectric level will increase the probability of lightning stroke, but it can reduce the amplitude of lightning intrusive waves, this is advantage to the protection of the substation ,and lightning protective effect of this mode is the best.

研究表明：在开关前安装MOA是保护热备用开关的最有效措施，即使在最严重的情况下，热备用开关的绝缘裕度也超过10%，可以保护开关的正常使用；不增加进线保护段杆塔的绝缘水平会增加进线保护段的雷击概率，但是此措施可以降低入侵波的幅值，对变电所防雷有利，这种防护方式的防雷效果最好。

Available microwave switch configurations include a simple single-pole double throw switch, multi-position switch, matrix, and cascade.

可用的微波开关配置包括简单的单刀双掷开关、多位置开关、矩阵和级联开关。

The transfer sequence of the transfer switch can be appraised by transfer test:if all performance indices meet the design requirements,its transfer capability can thus be ensured,which is proved by years'practices.

因此，在有载调压开关运行前必须做此试验。1有载调压开关的工作顺序有载调压开关是由电动机构、切换开关、分接选择器和转换选择器3大部分组成。

Soft switching can improve the converters efficiency and reduce EMI. In comparison of some methods of approaching soft switching, this thesis presents a Diode Auxiliary Resonant Commutating Network which is composed by an auxiliary bridge and a resonant commutating inductor. This topology not only well realizes zero voltage switching, but also overcomes the parasitic oscillation in the secondary side Diodes. Simultaneously, this topology makes both the secondary side diodes and auxiliary diodes operate on the soft switching state too, which reduces more switching losses and provides requirement for the system to run stably under the condition of self-cooled.

软开关能够提高变换器的效率和降低EMI，通过比较目前多种实现软开关技术方案，本文研究了一种由辅助桥臂和谐振电感组成的二极管辅助谐振换流网络，不但很好地实现了ZVS，并且克服了副边二极管上寄生振荡；同时，该拓扑也使副边二极管和辅助二极管都工作于软开关状态，进一步降低了开关损耗，为系统能够在自冷的条件下稳定运行创造了条件。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。