4、ayline双稳态元件Bistableelement单稳态元件Monostableelement磁芯存储器Corestorage寄存器Register磁带记录机Magnetictaperecorder盘式记录机Diskrecorder其他元气件本表其他地方未规定的器件 E =发热器件HeatingdeviceEH=照明灯LampforlightingEL=空气调节器VentilatorEV=保护器件过电压放电器件避雷器OvervoltagedischargedeviceArresterF =具有瞬时动作的限流保护器件Currentthresholdprotectivedevicewit