An external lightning protection system ( lps ) means , to me , that lightning rods , related cabling and a building grounding method are already in place 按我的理解,外部雷擊防護系統( lps )所指的是已經在位的避雷針、相關的引線導體及建筑物的接地方式。
Mjc : an external lightning protection system ( lps ) means , to me , that lightning rods , related cabling and a building grounding method are already in place 按我的理解,外部雷擊防護系統( lps )所指的是已經在位的避雷針、相關的引線導體及建筑物的接地方式。