switch n. 1.(树上折下的)细树枝;软鞭子;鞭打。 2.假发;(尾巴上的)毛簇。 3.〔美国〕【铁道】道岔扳子,轨闸转辙器;侧线。 4.【电学】开关;电闸;电键;转换器;【电话】接线台。 5.【军事】斜行壕。 6.(思想等的)大转变。 7.〔美国〕(金融机构和销售店的)电脑化联网。 a change-over switch 转换开关,转向开关。 a pull switch 拉线开关。 a three wire switch 双联开关。 a time switch 定时断路器。 a clock switch 定时开关。 a line switch (自动电话的)寻线机,预选器;线路开关。 vt. 1.鞭打;摆动;摇(尾);猛然抢去。 2.挂断(…的电话)(switch sb. off);关闭(电流),关(电灯) (off; out)。 3.通(电流),接通(电话给某人),开(电灯) (on)。 4.改变,转变(思想、谈话等);【铁道】给扳道岔;调配(车厢)。 vi. 1.鞭打。 2.【铁道】扳道岔;调车。 3.挂断电话 (off)。 4.转换,转变。 switch an electric light on [off] 开[关]灯。 switch off to another like of thought 改变想法[思路]。 Let's switch. 〔美国〕走吧;开动吧。 I'll be switched. 〔美口〕〔表示否定、惊讶〕(I'll be switched if you do. 你要是能的话我就把头砍掉)。 switch off [on] 不收听[收听](某一广播)。 switch through 【电信】转接。
Standard test method for electromechanical switches test for contact bounce 机电开关的标准试验方法
switch test for hermetic refrigeration motor compressors; test conditions 气密制冷电机压缩机的开合试验.试验条件
Guide for synthetic capacitive switching tests of ac high-voltage circuit breakers 交流高压断路器的合成电容电路开关试验指南
Guide for synthetic capacitive current switching tests of ac high-voltage circuit breakers 交流高压电路断路器的合成电容电路开关试验指南
High-voltage alternating current circuit-breakers-guide for short-circuit and switching test procedures for metal-enclosed and dead tank circuit-breakers 高压选择电流线路断路器.金属封闭的和不通电的箱式线路断路器短路和开关试验设备指南
Q-switching test of e-o modulator was carried out, the results displayed regular rectangular optical pulse figuration without any acoustic ringing, the leading and trailing edges is 5 ns 制作的电光开关的光斩波实验,结果显示出正常的矩形开关光脉冲,上升和下降沿都是5ns,看不出任何振荡现象。
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