time and motion study怎么读 time and motion study是什么意思
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n. [经]工业操作效率的研究分析
time and motion study的英文翻译是什么意思，词典释义与在线翻译
Noun:- an analysis of a specific job in an effort to find the most efficient method in terms of time and effort
time and motion study的用法和样例
