effective indices的用法和樣例：
例句
- Combining the modified effective index method, a novel method for calculating the complex reflection spectrum is proposed.
結合改進(jìn)的有效折射率分析方法，提出了一種計算光纖光柵譜特性的新方法。 - The result obtained by the vectorial effective index method is in better agreement with those by the finite element methods and measured data.
采用矢量有效折射率方法的計算結果與基于有限元方法求解的數值結果和測量結果吻合得更好。
