labor quantity variance 人工数量差异 ; 人工工时差异
Direct materials quantity variance 直接材料数量差异
sales quantity variance 纯销售数量差异
sales-quantity variance 销售数量差异
Direct Material Quantity Variance 直接原料数量差异
materials quantity variance 原材料用量差异
variable overhead quantity variance 变动制造费用数量差异
fixed overhead quantity variance [工经] 固定制造费用耗量差异
labour quantity variance 人工工时差异
Methods By multivariate analysis of variance on 4 service quantity indexes of the service institutions in 11 cities of 3 areas, of 2 types were comprehensively analyzed.
方法对我国3个区域、11个城市、2个类型的服务部门，综合考虑4项服务量指标，进行多元方差分析。
The method avoids large amount of variance calculation and its calculation quantity is only about 50% that of Otsu method. It can fulfill the demands of adaptability and real time.
该方法避免了大量的方差计算，计算量仅为大津法的50%左右，能够满足自适应性和实时性的要求。
Detecting rate of the secondary gauge along with the variance of water quantity is analyzed, therefore, leakage can be identified. This method can reduce water consumption.
经过对二级表监测率随用水量变化的情况以及其它测试数据的科学分析，可判断漏水点存在与否，以节约水资源，达到节能降耗的目的。
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