gas main laying works

同义词释义

1)gas main laying works,铺设煤气总管工程2)gas-main laying works,煤气管铺设工程3)lay down gas pipes,铺设煤气管道4)Piping work,铺管工程5)gas applicance engineers,煤气设备工程师6)water main laying,总水管敷设工程