The yellow index of blends at different mixing time and thermal aging time increased obviously than that of pure polymer.

在不同混炼时间及热老化时间下，共混物的黄度指数相对纯聚合物有明显提高。

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Through testing caramel color and with the fact of production, a method of test the yellow index of caramel color is put forward.

本文通过对焦糖色素的检测，同时结合生产实际，提出了焦糖色素黄色指数的检测方法。

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The index case was identified through routine yellow fever surveillance system.

指示病例是通过常规黄热病监测系统发现的。

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At midnight on New Year's Eve, he was bitten on his index finger by a yellow timber rattlesnake.

WSJ: Reviving Faith by 'Taking Up Serpents'

However, at mid-morning U.S. trading the yellow metal slumped further when the U.S. dollar index moved above unchanged and to its daily high.

FORBES: P.M. Kitco Metals Roundup: Comex Gold Ends Sharply Lower On EU Uncertainty, Firmer U.S. Dollar Index

The yellow metal was supported by a weaker U.S. dollar index and higher crude oil prices.

FORBES: Comex Gold Ends Firmer On Weaker U.S. Dollar, Higher Crude Oil