久青草国产手机视频免费观看_毛片网站是多少_亚洲视频中文_一区二区高清在线

首頁英語詞典bauxitebauxite英英釋意

bauxite

英 ['b??ksa?t] 美['b?ksa?t]
  • n. 礬土,[礦物] 鐵鋁氧石;[礦物] 鋁土礦

英英釋意


1. a clay-like mineral; the chief ore of aluminum; composed of aluminum oxides and aluminum hydroxides; used as an abrasive and catalyst