roofern.盖屋顶的人
roofn.屋顶;顶vt.覆盖;给 ... 覆以屋顶
roof radiant tubes炉顶辐射管
roof afforestation屋顶绿化
roof caving height放煤高度
roof breakage pace来压步距
roofing grass root减压阀
roof-angle prism脊角棱镜
roof strike drills顶板走向钻孔
roof movement rule顶板运动规律
roof bolting jumbo打顶板锚杆眼用钻车,顶板栓锚眼用钻车
Roof of acetabulum髋臼盖