| 释义 |
motion study ＝time and motion study 以上来源于：《21世纪大英汉词典》 motion studyn.=time and motion study详细释义源自:《新世纪英汉大词典》Collins外研社 n= time and motion study英英释义n.an analysis of a specific job in an effort to find the most efficient method in terms of time and effo |