Their surface is rough, quality is inferior, embezzle other brand.它们外观粗糙, 质量低劣, 盗用他人品牌.No organization or individual shall intervene, embezzle and divert.任何组织和个人不得干涉 、 截留、挪用.The cashier embezzle $ 50, 000 from the bank a...
显微镜见到的粒子,在颜色 、 组织结构 、 均匀性以及对水的溶解和吸附性方面都各不相同.Microscopically visible particles differ in colour, texture, unmiformity and in watersolubility and absorption.分子筛具有吸附性、再生性, 热稳定性好.Molecular sieve has the advantages of good ab...