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avia. 水平开关; 信号电平开关
earth.sc. 钳位电平转换
el. 电平切换
met. 料位开关; 料面开关
space 电平开关
tech. 箝位电平开关; 钳拉电平转换
wind. 信号电平开关; 液位开关; 油位开关
level switch: 40 phrases in 17 subjects
Automobiles10
Aviation2
Chemistry1
Compressors2
Computer networks1
Construction1
Earth sciences1
Electric machinery1
Electronics6
Hydroelectric power stations3
Nautical1
Oil / petroleum1
Oil processing plants1
Rail transport1
Technology6
Telecommunications1
Textile industry1