利用这些分析表达式，讨论了束流包络极大值和极小值存在的判别条件，导出了计算包络极大值和极小值及其位置的精确公式。

And we have derived the accurate formulae with which one can calculate the maximum and the minimum values of envelop and their position.

youdao

利用这些分析表达式，讨论了束流包络极大值和极小值存在的判别条件，导出了计算包络极大值和极小值及其位置的精确公式。

And we have derived the accurate formulae with which one can calculate the maximum and the minimum values of envelop and their position.

youdao