time-and-motion engineering
... time-and-motion study 操作测定 ; 动作研究 ; 动作时间研究 time-and-motion engineering 合理的劳动组织 space-time Brownian motion 时空布朗运动 ...
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But Frank married Lillian when he was 36, after he had done much of his time-and-motion work and years after he had set up his own engineering consulting business.
但是法兰克和莉莉恩结婚时已经36岁，在那以前他已经进行了大量的时间-动作研究工作，更于早年创办了自己的工程咨询业务。
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