roofern.盖屋顶的人
roofn.屋顶;顶vt.覆盖;给 ... 覆以屋顶
rooflighting sheet采光屋面板
roof-packed milk屋顶奶
roof water-tight屋面防水
roofing insulation屋顶保温层
roof - fall area冒顶区
roof walerproofing屋面防水
roof and side fall冒顶片帮
roof of coal drift煤巷顶板
roof beam of frame框架粱
roof-cutting jib截顶槽截盘