Far West Technology, Inc. and Health Physics Instruments are manufacturers of radiation measuring instruments and devices including radiachromic dosimeters radiation let tepc proportional counters ion chambers survey meters geiger counters alpha beta gam
78.Beta-lactam antibiotics-β内酰胺抗生素 本视频介绍了β内酰胺抗生素 盘尼西林的相关知识及作用机理 可汗学院:MCAT考试-化学课程(网易公开课编辑整理)