冲击接地电阻
impulse grounding resistance
impulse earthing resistance
impulsive ground resistance
impulse potential distribution
高阻抗接地故障
high impedance ground fault
接地阻抗
earth resistance
grounding impedance
ground impedance
grounding resistance
Earth impedance
impedance of grounding connection
Grounding im-pedance
接地阻抗测试
earth loop impedance test
接地阻抗继电器
grounding impedance relay
ground impedance relay
爆炸地冲击
ground shock induced by explosions
explosion seism