roof n. 1.屋頂,房屋;家屋。 2.(放行李的)車頂;笠形罩。 3.上頜。 4.最高部,頂部;【礦物】頂板。 5.【航空】(飛機)機身上的包皮;擔(dān)任空中掩護的飛機;〔口語〕(飛機的)絕對上升限度。 the roof of heaven 天空。 the roof of the world 世界的屋脊。 full to the roof 塞滿一屋。 hit the roof [ceiling]勃然大怒[狂怒]。 left [be] without a roof 無家可歸。 raise the roof 〔俚語〕喧鬧;鬧翻了天;大聲訴苦[發(fā)怨言]。 under sb.'s roof 寄住某人家里。 under a roof of foliage 在樹蔭下。 under the roof of 住在…的家里,寄…的籬下,在…的照應(yīng)下。 vt. 給…蓋屋頂;像屋頂一樣蓋著;放入屋里;保護,庇護。 adj. -less 無屋頂?shù)?;無家的,無住處的。
Roof bolt plates for mining and tunnel support 礦井和遂道支撐用防護錨栓板
Research and development of new drilling bit for roof bolt driller 錨桿鉆機新型鉆頭的研制
Galvanized mild steel roofing bolt and nut 鍍鋅瓦楞螺栓螺帽
Technique of combined supporting of roof bolting with bar and wire mesh in coal roadway 煤巷錨梁網(wǎng)組合支護技術(shù)的研究與應(yīng)用
Expansion type roof bolt 膨脹式錨桿
Application of the technology of roof bolting with bar and wire mesh in the zhangji coal mine 三維地震勘探在王莊煤礦62采區(qū)的應(yīng)用
Based on the rock pressure ' s characteristics of the pre - driven roadway , the rational support plan and parameters about roof bolting with bar and wire mesh are determined , and the manner of driven waste in place of coal was adopted 基于斷層中預(yù)掘巷的礦壓特點,確定出其合理的錨梁網(wǎng)支護方案與支護參數(shù),并采用了掘出的矸石與煤的合理“置換”方式。