开关

When spark switch closes,an electric arc forms between the electrode,and current conduction begins.

当气体火花开关闭合时，开关电极之间会产生强烈的大电流电弧，电极内部开始有电流流动。

This intelligent controller is matched used with automatic transfer switch contactor that with mechanical interlock drawer type air breaker that with mechanical interlock.

本智能控制器是与自动转换开关、带机械互锁的接触器、带机械联锁的抽屉式空气开关配套的通用型智能控制器。

Air switch, contactor and thermo switch all adopt Schneider series products.

空气开关、接触器、热继电器均采用施耐德系列产品，其它继电器、按钮开关、指示灯等电器均采用国内名优产品；用上述器件组成的电控系统，工作可靠性高、使用寿命长。

This product is widely used in a variety of relays, AC contactor, air switch, button switch, thermal protection , and temperature control devices, circuit breakers, electrical appliances and automotive electrical starter and so on.

本产品广泛应用于各种继电器，交流接触器，空气开关，按钮开关，热保护器，温控器，断路器，起动电器及汽车电器等等。

PA66 Product uses the company's products are widely used in PA66: auto parts, industrial electrical equipment, complete sets of the control switch, AC contactor shell, low-voltage electrical panels, industrial parts and components, power tools, machinery parts, bearing cage, fishing gear , sports equipment, various types of switching components of connector components, transformers frames, Terminal Blocks, computer connectors, fuse box, metal and other industries, has an outstanding safety and reliability and stability.

本公司的PA66系列产品广泛应用于：汽车零部件、工业电器、成套控制开关、交流接触器壳体、低压电器护板、工业零部件、电动工具、机械配件、轴承保持架、渔具、运动器材、各类开关组件接插件组件、变压器骨架、端子台、计算机连接器、保险丝盒、五金等行业，具有卓越的安全可靠性和稳定性。

When switch on the combined power supply in some mobile stations, AC leakage current breaker breaks off often.

针对部分移动基站的组合电源开通时，出现交流漏电流断路器经常跳开的现象，以DMA14-48/50风冷开关电源模块为例，分析了开关电源的漏电流产生原因，并对其漏电流值进行了计算和测试。

Lastly, the next studying direction of MEMS optical switch is put forward.

最后，对MEMS光开关做出了展望，指出了今后MEMS光开关的进一步研究方向。

In this paper, the present research situation of optimal configuration of switch device home and abroad in recent years is summarized, the research achievements in objective function selection, modeling, solution algorithm and application as well as existing problems are expounded; the further research direction of optimal configuration of switch devices, including the improvement in accuracy of algorithm and calculation speed, the consideration of reliability and parameter uncertainty, the expansion of static modeling and so on, are looked ahead.

文章综述了近年来开关优化配置的国内外研究现状，详细阐述了目标函数的选择、建模、求解算法、费用计算以及应用等各方面研究成果及存在的问题，展望了开关优化配置进一步的研究方向，包括算法精度和速度的改善、可靠性和电气参数不确定性考虑、静态建模拓展等内容。

The developing direction of current laser switch mode power supply is being digital, being intelligentized, being high-frequency and being modularized.

现在的激光开关电源的发展趋势是数字化、智能化、高频化和模块化，因此，本课题选择以单片机为核心研制出一套高功率轴快流CO_2激光器的开关电源控制系统。

Placing the switch such that the direction of switch operation is vertical, a static load of 3 kgf shall be applied in the direction of stem operation for a period of 60 seconds.

开关的动作方向为垂直放置开关，在推柄动作方向施加 3 KG的静负荷，60秒时间

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。