本文报道了用菱锌矿作原料,制备硫酸锌的工艺条件.The technological conditions of the preparation of zinc sulfate with smithsonite as raw materials was reported.研究了以菱锌矿为原料通过酸浸、除杂、中和、沉淀、干燥制备碱式碳酸锌和活性氧化锌的生产工艺.A process for the production of basic zi...
He was detected in the act of stealing.他在偷窃时被当场发觉.Ken was in the act of paying his bill when Neil came up behind him.当尼尔从后面走过来时,肯正在付账。He was caught in the act of stealing the sweets.他正在偷糖时被抓住了....
Objective To study the germicidal mechanism of propolis - silver ion compound nanometer emulsion.目的研究蜂胶 - 银离子复合纳米乳剂杀菌机理.Objective Experimental observation on germicidal efficacy bit of electrolyzed oxidizing water.目的用悬液定...
These directions embody the trends of integration, intercross and qualification.可以看出沉积物搬运和底形研究的方向体现了综合 、 叉和定量这三个主要的趋势.The social cachet of some form of qualification in India is powerful...在印度,具有某种资格享有巨大的社会威望。Jack has ob...