... 临时超前支架 foreset 临时钢支柱 roof jack 临时横撑 false stull ...
双语例句
1
Jack Bauer had slipped to the back of the tavern and used a metal Dumpster to get a boost to the flat tar roof.
杰克·鲍尔悄悄走到酒馆后面，踩着一个金属大垃圾箱爬上铺着沥青的平坦屋顶。
2
When vertical column is lifted, the roof beam is closely near top plate, the integrated mining equipment can be lifted or laid down by the hoisting jack.