If an iterator class or a function with static (or global) variables depends on multiple data states, two problems come up.

如果带静态(或全局)变量的迭代器类或函数取决于多个数据状态，则出现两个问题。

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Based on the structural characteristics of bearing flange, the optimization model is established according to the objective function, design variables and constraints, and make a static analysis.

基于支承法兰盘的结构特征，通过目标函数的建立、设计变量的选取以及约束条件的确定建立了优化设计的有限元模型，并对法兰盘进行了静力分析。

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You should not use your instance constructors, some special private function, or any other idiom to initialize static variables.

不应该使用实例构造函数、一些特殊的私有方法、任何其它习惯来初始化静态变量。

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