lightning protection earthing 避雷接地

static electricity protection earthing 防静电接地

main protection earthing point 主保护接地点

lightning protection earthing system 防雷接地系统

Resistance of protection earthing conduction 保护接地之阻抗

lightning-protection earthing technical 防雷接地技术

stator single-phase earthing protection 定子单相接地保护

earthing protection 保护接地

generator protection for earthing 发电机接地保护