云是由凝聚的水蒸气构成的.Clouds are formations of condensed water vapour.同质成核作用之所以可能,是由于蒸汽中分子凝聚的统计起伏.Homogeneous nucleation is made possible by statistical fluctuations among molecular aggregates in the vapour.这个系统确定凝聚的大小和分布.The sys...
Leaching of copper from chalcocite with acidic acetonitrilecopper sulphate system was studied.研究了用酸性乙腈硫酸铜体系从辉铜矿中提取铜.The paper discusses a new method for producing cupric feed copper sulfate by chalcocite and ehalcopyite....