pneumatic electric relay 气动继电器
electric relay interlocking 继电联锁装置
magneto electric relay 磁电式继电器
electric reset relay [电] 电复位继电器 ; 电复位式继电器
dynamo electric relay 动电式继电器
Compared with conventional electric relay control system, PLC control can run more safely and reliably, and can be operated more practicality, simply and conveniently.
运行安全可靠，操作实用简单方便，PLC控制具有常规继电器控制所不具有的优越性。
By single chip computer control of counter automatically generate tong 1 second stop 4 seconds of signal, make no. 5 relay output drive electric horn turns electrify.
由单片计算机控制的计数器自动产生通1秒停4秒的信号，使5路继电器输出带动电喇叭轮流通电。
It is recognized that the gas density relay can reflex the gas density in gas insulated electric equipment correctly and the pressure relay cant do the same.
一般认为气体密度继电器可以正确反映气体绝缘电气设备的气体密度，而压力继电器则不能。
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