roofedv.给 ... 覆盖(保护)adj.有顶的
roofn.屋顶;顶vt.覆盖;给 ... 覆以屋顶
roof coal mining放顶煤开采
roof-top prism层脊形棱镜
roofbolt shoring锚杆支护
roof-weir gate改进式熊阱堰闸门
roofing material屋面材料
roof-bolt head洞顶锚栓头,顶板锚头
roof water burst顶板突水
roofing planting屋面种植
roofing granules屋面粒渣,屋面颗粒材料