量差variance: n. 1.变化,变动,变更;变度,变量;【统计】(平)方 ...quantity: n. 1.量 (opp. quality); 分量,数量 ...quantity variance: 数理差异; 数量差异analysis of material quantity variance: 材料数量差异分析analysis of materials quantity variance: 材料数量差异分析下载手机词典可随时随地查词查翻译