电磁式漏电保护装置
magnetic residual current circuit-breaker
电弧光保护技术
electric arc light protection technique
电弧光保护双判据
arc protection double criterions
电弧光保护系统
arc protection system
arc light protection system
电梯停电保护装置
elevator power-off protection device
焊机空载自动断电保护装置
no-load power-off device of power supply
继电保护装置
overload protection device
Relay protector
relay protection system
relay protection equipment
relay protective device
relaying protection
relay device
protective relayings
relay protection device
protective relay
Relay protection
Protection device
微机继电保护装置
micro computerized relay
microprocessor-based relay protection equipment
computerbased protection
Microcomputer-based relay protective
微机型继电保护装置
microcomputer based relay protective devices
micro relaying protection equipment
microprocessor-based Protection
CO2气体保护电弧焊
CO 2 arc welding
CO 2 gas shielding arc welding
XHG消弧消谐选线过电压保护装置
XHG arc extinction
harmonic eliminating and line selection over voltage protective device