The structure, the principle of work, bauxite floatation of BF - L floatation machine were presented.本文介绍了BF -L 型浮选机的结构特点, 工作原理及铝土矿选矿的适应性研究.The seven leading bauxite exporters formed the International Bauxite Association...
Aluminum is made from bauxite.铝是从铝土矿中提炼出的.The seven leading bauxite exporters formed the International Bauxite Association.七个主要的铝矾土出口国组成国际铝矾土协会.Industry: petroleum, diamonds, iron ore, phosphates, feldspar, bauxite, uran...
Darby Now faith is the substantiating of things hoped for , the conviction of things not seen.新旧库信仰乃是所盼望之事的实现心态, 是未见之事的实验标准.Substantiating and enriching the world outlook theory is an effective way of perfecting philosop...