3*6+1*4电缆标准做法 天津市电缆总厂第一分厂

p1Src=//y3.yzimgs.com/uploads/354583/201791-22454547.jpg?imageView2/2/w/200/h/200|watermark/2/text/5aSp5rSl5biC55S157yG5oC75Y6C56ys5LiA5YiG5Y6C/font/5a6L5L2T/fontsize/750/fill/I0E3QTlBOA==/gravity/SouthEast