电工器件 meaning in Chinese

electrical accessories

Railway applications - electric equipment for rolling stock - part 2 : electrotechnical components - general rules
铁路应用机车车辆电气设备第2部分：电工器件通用规则
Railway applications - electric equipment for rolling stock - part 3 : electrotechnical components - rules for d . c . circuit - breakers
铁路应用.机车车辆电气设备.第3部分:电工器件.直流断路器规则