| 单词 | time and motion study |
| 释义 | time and motion study【机】 工时研究, 工时学 time and motion study time and motion study n.（名词）An analysis of the efficiency with which an industrial operation is performed.Also called motion study ,time study 时间与动作研究：对企业运作效率的分析也作 motion study,time study |
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