RT节电器
RT power-saving appliance
半自动继电器系统
semi-automatic relay system
半自动连续带继电器交换
semi-automatic continuous tape relay switching
保护继电器测试仪
protective relay test set
闭锁离合器电磁线圈输出
lockup clutch solenoid output
变送器电子数据表格
transducer electronic data sheet
补偿式换向器电动机
compensated commutator motor