In the analysis with the method samples and standards must be homogeneous in composition.
用本方法分析,样品和标样必须是均匀的,标样和试样的成分要相似。
In a dynamic system analysis with the method of state variable, when the system is more complex, the selection of state-variable has some difficulties.
用状态变量法分析动态系统时,若系统比较复杂,对于状态变量的选择就存在一定的困难。
This paper analyzes the research literature on using the student assistant in university library in the last few years with the biblio-metric method and literature content analysis.
本文采用文献计量法和文献内容分析方法,对近几年来大学图书馆使用助教的研究文献进行了分析。
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