effective index model 等效折射率模型
The propagation properties of photonic crystal fibers (PCF) are discussed with effective-index model.
应用等效折射率模型研究了光子晶体光纤(PCF)的传播特性。
Compared with the traditional subjective judgments of administrative staff and single evaluation index model, DEA model has offered a more effective method in appraising advertisement effect.
同传统的管理人员主观判断和单一评价指标相比，DEA模型提供了一种更为有效的广告效果评价方法。
After defining a effective index for process similarity, an analogue model, which is suitable for doing similarity forecast for a time series, was established.
通过寻找过程相似的有效指标，建立了一个适合于时间序列分析的相似预报模式。
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