核电站数字化保护系统
Digital protection system of nuclear power plants
掉电保护电路
circuit protector against power failure
power-down protection circuit
配电保护电器
distribution protection device
核电保险模式
nuclear power insurance mode
环境保护核查
environmental protection verification
CO2气体保护电弧焊
CO 2 arc welding
CO 2 gas shielding arc welding
Crowbar保护电路
Crowbar protection circuit
安全保护电路
security protecting circuit