文中还简化了最宜指数的计算公式，并讨论了各种选择指数的应用问题。

A simplified formula of the optimum index is given, and the problems of application of the indices are discussed.

youdao

文中还简化了最宜指数的计算公式，并讨论了各种选择指数的应用问题。

A simplified formula of the optimum index is given, and the problems of application of the indices are discussed.

youdao