效率差异（Efficiency Variance）：比较原物料实际投入量 与总产量之标准投入量。与传统效率差异的差别，在于传统 效率差异计算的是原物料实际投入量与品质好的完...
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labor efficiency variance 人工效率差异
direct labor efficiency variance 直接人工效率差异
material efficiency variance 材料效率差异
Overhead Efficiency Variance 制造费用效率差异
manufacturing overhead efficiency variance 制造费用效能差异
labour efficiency variance [劳经] 劳动效率差异
variable overhead efficiency variance 制造费用效率差异
volume efficiency variance 生产量效率差异
overhead volume efficiency variance 间接费用数量效率差异
Longitudinal data is typical related data, and it is desirable to choose correct data variance structure since the correct structure affects the efficiency of estimation.
纵向数据为典型的相关数据，数据方差结构选择的正确与否直接影响估计的效率。
The generalized variance ratio is a measure of efficiency.
广义方差比是一个效率度量。
The experiments results shown that the effect of rotational speed variance on the desalination and its efficiency wer. e obvious under same experiment condition.
实验结果表明，在实验条件相同的情况下，离心转速的变化对灰白冰的脱盐、脱盐效果均有显著影响。
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