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switch; double-pole single-throw：双极单向开关

"switch; double-pole double-throw","双极双向开关" | "switch; double-pole single-throw","双极单向开关" | "switch; emergency","紧急开关"

switch; double-pole single-throw：双极单投开关

双极双投开关 switch, double-pole double-throw | 双极单投开关 switch, double-pole single-throw | 双投开关 switch, double-throw

switch, double-throw：双投开关

双极单投开关 switch, double-pole single-throw | 双投开关 switch, double-throw | 备急开关 switch, emergency

switch baseplate：开关底板

switch bank 转换开关组 | switch baseplate 开关底板 | Switch Bill of Lading 交换提单

BOURNS MEXICO ... Sensor, Micro Switch：传感器

BODINE ... Pinch Roll Motor, Motor controller, Gear Box马达 | BOURNS MEXICO ... Sensor, Micro Switch 传感器 | BRAD-HARRISON ... Joy Hand Held Switch, Electrical Switch 电路开关

car switch automatic floor stop operation：轿厢开关自动停站装置

car switch 轿厢开关 | car switch automatic floor stop operation 轿厢开关自动停站装置 | car switch control 轿厢开关控制

iron-cased switch：铁壳开关

辅助开关 auxiliary switch | 铁壳开关 iron-cased switch | 主令开关 master switch

switch lamp socket：开关灯头

switch lamp holder 开关灯头 | switch lamp socket 开关灯头 | switch off 断开

Overload Trip Switch：过负荷跳闸压板

零序跳闸压板 Neutral-Phase Trip Switch | 过负荷跳闸压板 Overload Trip Switch | 低电压跳闸压板 Low Voltage Trip Switch

ORS Overload Reverse Switch：门遇阻力重开之开关

OLS Open Limit Switch 机门开尽监视开关 | ORS Overload Reverse Switch 门遇阻力重开之开关 | MSB Maintenance Switch Box 保养用之控制开关盒

Minstrel Show：化装黑人乐队的演出

show cause 提出正当理由 | minstrel show 化装黑人乐队的演出 | medicine show 走江湖卖药

punctual aspect：準時式;準時體;一次體

punched card 穿孔卡片 | punctual aspect 準時式;準時體;一次體 | punctuation 標點符號用法