萃取比

extraction ratio的用法和样例：

例句

The paper indicated the main factors which affected the extraction ratio of flavonoid compounds in toona sinensis.探讨了影响香椿中黄酮类化合物提取率的主要因素。
The result shows that bio-catalytical oxidation is available to raise the extraction rate of gold.结果表明，生物催化氧化对于提高金的提取率有显著效果。

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