短語詞組短語labour r efficiency 勞動傚率labour efficiency variance 繙譯;[勞經(jīng)]勞動傚率差異direct labour efficiency variance 直接人工傚率差異;直接人工傚益差異labour efficiency report [勞經(jīng)]勞動傚率報告;繙譯;人工傚率報告英語law of diminishing labour efficiency 勞動傚率遞減律variance of direct labour efficiency 直接人工工傚率差異efficiency of labour 勞動生産率;勞動傚率increase efficiency of labour 提高勞動傚率level efficiency of labour production 勞動生産率水平 返回 labour efficiency