Research of heat loss index is necessary because of the oneness of heat loss index calculation method and some parameter need to be revised.

我国节能标准规定的耗热量指标计算方法单一，且部分参数取值需要修正，所以对耗热量指标计算方法进行研究很有必要。

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The concept of the structural performance safety index is put forward and its calculation method is derived based on the structural deformation limit state equation.

提出了结构性能安全指数的概念，并以结构的变形极限状态方程为基础得到了结构设计性能安全指数的计算方法和结构性能等级的划分标准。

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In this paper, the definition of process capability and calculation method of process capability index, and how to control the process quality in motors batch production are introduced.

文章介绍了工序能力的定义和工序能力指数的计算方法，以及在电机批量生产中如何对工序质量加以控制。

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