“trace enrichment”的概念、定义、翻译、参考文献-科学参考

单词	trace enrichment
释义	trace enrichment Encyclopedia 理学【分离方法】释 trace enrichment痕量富集从大量母体物质中搜集欲测定的痕量元素至一较小的体积，从而提高其含量至测定下限以上的分析方法。痕量物质一般指试样中含量低于0.01%的物质，如果它的含量低于分析方法的测定下限，就必须采用预富集的办法。
随便看	landfill vertical barrier land finance land financing landform assemblage landform forming process landform reshaping landforms and landscape devastation Land for mulberry cultivation land for rural residential building land for tertiary uses land founctions land function classification land geophysical exploration land grading land grant college land hierarchy land information database land information management land information system landing area selection landing buffer system landing electrode landing exploration landing flight test landing guidance system

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