Something has been dropped on the floor and rolled beneath the valance of the bed.有一样东西掉到地板上又滚到床沿挂布的下面。
Pharmacokinetics and bioequivalance of levofloxacin lactate in healthy volunteers;乳酸左氧氟沙星片人体药物动力学及生物等效性研究
By using the method of equivalance point source, this paper leads to the total concentration formula multiple-source ( p本文应用等效点源法,导出关于多个(点、线或面)大气污染源在某一评价点造成的总浓度的计算公式。