switch off
1. (用开关)关掉
Be sure to switch off the light when you leave the office.
你离开办公室时务必把灯关掉。
switch on
1. (用开关)开启; 用开关接通电流
Switch on the recorder, please.
请打开录音机。
习惯用语be switched on1.赶时髦; 赶浪头; [美俚](因喝酒或服麻醉品而)处于兴奋状态fall asleep at the switch1.玩忽职守, 错过机会; 漫不经心I'll be switched (if you do).1.[美口][表示否定、惊讶](你要是能的话)我可以把头砍掉。switch around1.(使)经常改换工作, 使变换位置switch from (to)1.变换, 转移switch off [on to]1.切断[接上](电流); 不收听[收听](某一广播); (使)兴味索然[兴致勃勃]switch over (from one to another)1.(从某方面)转变(到另一方面)switch to1.转(换)到switch through1.(把电话)接到(某分机), 接过来特殊用法access switch1.进入开关acknowledging switch1.警惕开关, 确认开关actuated roller switch1.【机】促动滚子开关aerial switch1.天线开关air-break switch1.空气开关air compressor switch1.空气压缩机开关alter switch1.变换开关arrester switch1.避雷器开关assignment switch1.呼叫开关; 呼叫分配器attent-unattent switch1.(终端系统)自动转换开关auto-manual switch1.自动-手动开关baby knife switch1.小型闸刀开关barometric switch1.气压继电器barrel switch1.鼓形开关, 筒形开关bilateral switch1.双向开关billet switch1.坯料分配器bipolar switch1.双极开关block switch1.闭塞转接器, 闭塞开关brake switch1.制动开关break-before-makeswitch1.断-合开关breakdown switch1.故障[应急]开关breakpoint switch1.断点开关cabinet switch1.开关箱cam switch1.凸轮开关cathode switch1.阴极开关centralizing switch1.(中央)集中开关; 修正接点(陀螺仪的)chain billet switch1.链式坯料分配器challenge switch1.振铃电键, 呼叫开关changeover switch1.转接开关, 换向[路]开关, 双向开关channel switch1.通道开关; 波道[转换]开关chicken switch1.(太空飞行遇到紧急情况时把太空人弹出座舱的)弹射按钮; (火箭飞行失灵时由地面控制的)自动炸毁装置按钮chopper switch1.闸刀开关clip spring switch1.(内线)弹簧开关closed switch1.密贴道岔cluster switch1.组开关coarse-fine switch1.粗-精开关coding switch1.发码开关combination switch1.复合开关; 控制器commutationswitch1.换向开关compilerswitch1.编译程序开关computer-reset-hold switch1.计算-复位-保持三用开关console switch1.操作开关controlswitch1.总开关; 控制回路内的开关; 控制开关, 主令开关counter switch1.计数开关crystal switch1.晶体开关cubicle switch1.组合开关; 室内开关, 室内用配电箱current mode switch1.电流型开关data sampling switch1.数据采样开关dead end switch1.终端开关dead front switch1.安全开关deck switch1.同轴开关(组), 联动开关(组)derailing switch1.开关器; 转辙器detachable key switch1.键控开关dial switch1.拨号盘式开关, 选位开关differential pressure switch1.压差开关, 压差传感器digital switch1.数字开关diode switch1.二极管开关direction-finding-receive switch1.测向-接收开关disabled motor switch1.电动机故障断路器display switch1.显示开关door interlock switch1.门锁开关double-bank commutator switch1.双触排转换开关drum switch1.鼓形开关duty sequence selector switch1.工况顺序选择开关electric switch1.电开关, 电钮electronic sampling switch1.电子转换器emergency switch1.应急开关entry switch1.输入开关, 入口开关feeder switch1.馈路开关feeler switch1.测试键field switch1.场开关, 励磁开关finder switch1.寻线机flap-limit switch1.襟翼限动开关float switch1.浮控开关fluidic switch1.射流开关foot switch1.脚踏开关, 脚踏电门forestalling switch1.警惕开关ganged switch1.联动开关gapping switch1.桥接开关gate control [turn-off] switch1.门控开关governor switch1.调节器开关gravity sensing switch1.重力传感开关ground switch1.接地开关; 地爬式转辙器group switch1.组开关, 群开关guarded switch1.保险开关head switch1.磁头(转换)开关high-tension switch1.高压开关hold reset switch1.复位保持开关hospital switch1.故障转换开关howler switch1.嗥鸣电键hunting switch1.寻线开关, 寻线机identification switch1.辨识开关impulse switch1.冲击式断路器;脉冲开关inductanceswitch1.电感转换开关intercommu-nication switch1.电报线路互换器interlocking switch1.联锁触点, 联锁开关; 联锁转辙器intervention switch1.应急开关ionic switch1.离子开关isolating switch1.隔离开关, 切断开关, 断路器jack switch1.插接开关jump switch1.跳步抢前换防key-board switch1.键盘开关knife switch1.闸刀开关lapping switch1.断-通开关level switch1.(信号)电平开关, 箝位电平转换light activated switch1.光敏开关light actuated silicon controlled switch1.光激可控硅开关limit switch1.限位开关, 极限开关line switch1.寻线机, 侍线机line-by-line switch1.逐行倒相开关linked switch1.联动开关load switch1.负荷开关lobe switch1.(天线辐射)瓣变换开关local-distant switch1.近程-远程开关locking switch1.锁定开关low-duty-cycle switch1.瞬时转换开关low-tension switch1.低压开关magnetic switch1.磁(力)开关magneto switch1.磁电机开关main switch1.总开关, 主开关mains switch1.电源开关, 馈路开关make-before-break switch1.合-断开关manual switch1.手控开关many-one function switch1.【自】多-一函数开关marker switch1.指示开关master switch1.总开关matrix switch1.矩阵开关mechanical switch1.机动道岔mechanical flag switch1.旗形开关mercoid switch1.水银(转换)开关meter switch1.仪表开关mimic-disconnecting switch1.模拟断路器miss record switch1.防错录开关modeselectorswitch1.工作状态选择开关monitor switch1.监听器开关motor-driven switch1.电动机驱动开关motor-operated switch1.电动道岔motor-operated group switch1.电动机操纵的群开关multi-break switch (=circuit-breaker)1.多重开关[断路器]multiplex switch1.复式开关multiwafered switch1.多片开关multiway switch1.多路开关no-load switch1.空载断路器,无载开关non-contactingswitch1.无触点开关non-homingswitch1.无归位(机)键non-homing type rotary switch1.不归位旋转机键, (自动电话)不归位式旋转寻线机non-numerical switch1.无号控机non-numerical line switch1.无号寻线机nonshorting contact switch1.不短接接触开关nonstop switch1.不停开关nontrailable switch1.非挤岔式道岔normal switch1.定位道岔normal-reverse switch1.(图象)反向开关no-volt release switch1.零电压释放继电器(开关)number switch1.号控机, 数字开关nut switch1.螺帽型开关oil switch1.油开关, 油闸(发电厂及输配电线用)oil-break switch1.油断路器, 油开关on-and-off switch1.通断开关one-control switch1.单一控制开关one hundred point switch 1001.线机键(自动电话)one-point end cell switch1.单极尾端电池开关one-shot switch1.冲息开关, 单触发按钮one-way switch1.单路开关open switch1.不密贴尖轨operating switch1.操作开关operation-control switch1.操作控制开关optical focus switch1.光学聚焦转换开关option switch1.选择开关optoelectronic multiplex switch1.光电转换开关out switch1.输出开关out going trunk switch1.出中继机键outlying switch1.远距道岔overheat switch1.过热保护开关, 热继电器overload switch1.【采矿】过载开关override switch1.超越控制开关overtravel-limit switch1.行程开关ovonic switch1.双向半导体开关ovonic memory switch1.双向记忆开关packet type switch1.组合式开关padlocked switch1.钩锁道岔panel switch1.面板开关pantograph disconnecting switch1.集电弓断路开关parallel inverter switch1.并联变换开关parallel-series switch1.串并联转换开关parametric switch1.参数转换pass-band limiting switch1.带宽限制开关pause switch1.暂停开关peg switch1.记次开关pendant switch1.悬吊开关pendant pull switch1.拉线开关perfect switch1.理想开关perking switch1.速断开关phaseswitch1.相位开关phase-changeswitch1.换相开关phase-change-over switch1.相位转换开关phasing switch1.调相开关piano-key switch1.琴键开关pillar switch1.柱式开关pilot switch1.控制开关, 操作开关; 辅助开关pinch solenoid switch1.压带电磁线圈开关pipe switch1.管道转辙器plug switch1.插塞开关, 插塞式交换台plugging switch1.逆流制动开关plunger switch1.柱塞转换开关plunger line switch1.插棒式预选器plunger type line switch1.插棒式寻线机pneumatic switch1.气动开关pneumo-oil switch1.气动-油压开关point switch1.道岔电路控制器, 转辙回路管制器; 尖轨式转辙器point control switch1.道岔电路控制器, 道岔回路管制器polarity switch1.极性转换器, 极性转换开关polarity-reversing switch1.极性倒换开关polarization switch1.极化开关pole changing switch1.换极开关pole line switch1.电杆上线路开关, 架空线路开关pole mounted switch1.架空安装开关, 杆上开关, 极柱式开关pole oil switch1.杆上油浸线路开关, 架空油浸线路开关portable switch1.轻便转撤器position switch1.座席开关, 座席按扭positive-negative switch1.正负象转换开关posture switch1.姿势开关potential switch1.电压换接开关pot-type oil switch1.壶式油断路器power-brake changeover [transfer] switch1.开动-制动转接开关power-operated switch1.动力操纵的道岔power-saving switch1.节电开关power-thrown switch1.动力操纵[转换]的道岔preceding switch1.前位, 第一位prelimit switch1.预限开关preselecting rotary line switch1.旋转式预选寻线机, 旋转式预选机(自动电话)press switch1.压力(传动)开关press buttonswitch1.按钮开关press talkswitch1.按键通话开关press-to-talk switch1.按讲开关pressel switch1.悬垂式按钮站, 悬吊开关pressure switch1.压力操纵开关, 压力继电器pressure safety switch1.压力保险开关, 液压系统保险开关pressure sensitive switch1.压敏开关, 压敏继电器preview switch1.预看开关primary line switch1.第一级寻线机priority switch1.优先次序开关priority interruption inhibit switch1.优先中断禁止开关protected switch1.盒装开关protection switch1.保护开关proximity switch1.接近开关pull(-cord) switch1.拉线开关pulse switch1.脉冲开关push switch1.按钮开关push-and-pull switch1.推拉开关push-button switch1.按钮开关; 按钮式机键puzzle switch1.交分道岔quad bilateral switch1.四重双向转换开关quick-acting switch1.快动开关quick-acting spring switch1.速动弹簧开关quick-action switch1.速动开关quick-break switch1.高速断路器, 速断开关quick-make switch1.速通开关rack switch1.齿轨转辙器radio-freqency switch1.射频转换开关range switch1.波段开关; 量程开关; 距离转换开关range control switch1.量程控制开关ratioswitch1.比例(转换)开关read-pulse switch1.读数脉冲开关recall switch1.再[重]呼开关receiving sampler switch1.接收取样开关recessed switch1.暗线开关, 嵌壁开关, 埋装开关reciprocal ferrite switch1.互易性铁氧体开关recorder switch1.记录器转换recording control switch1.录制控制(磁迹)开关reed switch1.簧片开关regenerative switch1.再生式开关regenerative brake cut-off switch1.再生制动器切断开关regrouping switch1.重新组合开关regulating switch1.调节开关reheater operating switch1.复热器操纵开关relay switch1.继电器开关remote switch1.遥控开关remote lens-cap switch1.(摄象机)镜头盖遥控开关remote-controlled outlying switch1.遥控的远距道岔reset switch1.复位开关resonant-chamber switch1.共振腔开关resonant-iris switch1.谐振膜转换开关retract limit switch1.收缩极限开关return video switch1.回象开关reverse switch1.倒转开关reversing switch1.换向开关