This paper presented a fuzzy Petri net model to deal with the monitoring of robotic assembly. Based on the fuzzy Petri n......

用PEG-6000模拟土壤干旱胁迫,对2年生大叶冬青叶片生理生化等指标进行研究.结果表明,随着胁迫程度的加强和时间的延长,叶片中叶绿......

用双水相萃取方法直接从发酵液中提取柚苷酶进行了实验，就聚乙二醇一硫酸铵双水相系统中的聚乙二醇相对分子量、聚乙二醇浓度、硫酸......