The floatation performance of jamesonite with diethyldithiocarbamate as collector is studied.研究了以乙硫氮为捕收剂时脆硫锑铅矿的浮选性质.Diethyl xanthate not only adsorbed chemically but also became dixanthogen on jamesonite surface.乙黄药在脆硫锑铅...
There are some tools which realise this kind of artifices.一些工具实现了这些方法.Several artifices are used to simulate an impression of 3 D - like perspective, shading, movement, stereo - vision .一些方法被用来模拟类似于3D的透视图, 阴影, 运动, 立体效果.T...
日新月异的世界使这家公司感到了压力。A changing world has put pressures on the company.雾蒙蒙，寒冷的空气使他脸上感觉很舒爽。The cold, misty air felt wonderful on his face.那项协议使人们感到战争有望很快结束。The agreement has raised hopes that the war may end soon....