chemical unit化学单位
chemicaladj.化学的n.药品;化学物
chemical flocculation technology化学絮凝法
chemical process intensification化工过程强化
chemicalstructure identification化学结构鉴定
chemical reagent dust prevention药剂防尘
chemical fertilizer manufacturer化肥企业
chemical composition of the seed种子化学成分
chemical agents detection device侦毒器材; 化学侦察器材
chemical equilibrium calculation化学平衡计算