This method avoids a lot of trouble in the statistics and selection efficiency from directly selecting ratio trait, thereby solving the problem of comprehensive selection for ratio trait.

该方法避开了直接选择比值性状而在统计和选择效率方面所遇到的诸多麻烦，从而解决了比值性状的综合选择问题。

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After analyzing some normal evaluation functions for feature selection, a new evaluation function named the ratio of mutual information in feature selection was presented.

在分析了常用的一些特征选择的评价函数的基础上，提出了一个新的评价函数，即互信息比值。

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By experiment and theoretical analysis, the selection of winding Angle, thickness ratio and other main parameters is discussed.

通过实验与理论分析，对缠绕倾角、壁厚比等主要参数的选用进行了探讨。

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The car valeter from Inverness told the inquiry that he always drove on the track in a low-ratio gear selection in second gear.

BBC: Police in speed claim over Gordon Lennon fatal crash