ground surface line 中文意思是什麼
ground surface line
解釋
地面線-
Power cable route protection zone : the areas between two parallel lines formed by 0. 75 meters on both sides of the ground mark of underground cable route ; for sea - bottom cables, the zones should be the water surface between the two parallel lines formed by two nautical miles on both sides of the line ( 100 on both sides of the line in port ) and no less than 100 meters on both sides of the line in rivers ( not less than 50 meters for mid - sized and small rivers )
(二)電力電纜線路保護區:地下電纜為線路兩側各零點七五米所形成的兩平行線內的區域;海底電纜一般為線路兩側各二海里(港內為兩側各一百米) ,江河電纜一般不小干線路兩側各一百米(中、小河流一般不小於各五十米)所形成的兩平行線內的水域。
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