The first catalytic converters were called conventional oxidation catalysts.最初的转化器叫做常规氧化催化器.Many processes that are essential to the chemical industry use heterogeneous catalysts.很多重要的化学工业过程就是使用多相催化剂的.The producing techn...
Obviously, they know the difference between fluorite and ED.显然, 这些生产商们知道ED与萤石之间的差别.The seeming disorder of calcite highlights the geometric precision of fluorite.矿物质图片画廊.外观紊乱的方解石突出几何精确度的萤石.The cerium oxide preferably has...
Over a given period, the value of shares will rise and fall.股票的价值在某一特定的时期内会有涨跌。South Africa was going through a period of irreversible change.南非正在经历一场不可逆转的变革。The next few weeks will be a period of readjustment.接下来的几周将是适应...
绿玉: 唤醒大海般的爱和仁慈之一.Aquamarine: Remind one of the Ocean of Love and Mercy.安绿玉 属于利蛇纹石型的蛇纹石玉.Anl ■ - jade is a serpentine jade of the lizardite type.各种透明的白色 、 绿色 、 蓝色 、 黄色或粉色绿玉与宝石价值相当.Transparent varieties in white, green, bl...