它发生的原因是在高温极限下，这个指数就会很小，对吗？

That happened because in the limit of high temperature, then this exponent is really small, right?

youdao

Vix指数表示该曲线的短期极限值。

The Vix represents the short-dated end of that curve.

youdao

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。

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.

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