短語詞組短語attrition value [機]磨損值;磨損值;磨耗率attrition wear 磨損attrition sweeping 消耗性掃雷attrition Index 磨損指數(shù)operational attrition 作戰(zhàn)消耗;作戰(zhàn)消aircraft attrition 飛機損耗severe attrition 嚴重損耗sample attrition 樣本損耗;樣本耗損;樣本破損attrition mining 消耗性雷區(qū);消耗性布雷attrition rate 損耗率；退學率 返回 attrition