roofern.盖屋顶的人
roofn.屋顶;顶vt.覆盖;给 ... 覆以屋顶
roof-fall accident矿山塌落事故
roof abscission layer顶板离层
roof leakage accident漏顶事故
roof- rock drilling高位钻孔
Roof protection layer护顶层
roof inner seal plate顶棚内护板
roof beam of a string张弦梁
Roofing waterproofing屋面防水
roof-bolting stoper杆柱钻孔机
roof rainwater system屋面雨水系统