A variance calculation of test data is made and a criterion of O-ring process techniques stabilization is given.
在开展考核试验工作的基础上，通过方差计算，给出了一种判定O形圈工艺稳定性的方法。
Regular production cost variance calculation and analysis is a difficult part in the teaching of management accounting and enterprise financial control.
固定制造费用成本差异计算与分析是《管理会计》和《企业财务管理》教学中的一个难点。
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。
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