“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	quadratic Jordan algebra quadratic lattice quadratic law quadratic logarithm quadratic loss function quadratic magnitude term quadratic map quadratic mapping quadratic mean quadratic measure quadratic module quadratic non-residue quadratic non-residue modulo m quadratic optimization quadratic performance index quadratic phase array quadratic polynomial quadratic programming quadratic programming problem quadratic rate of convergence quadratic rate of increase quadratic reciprocity quadratic reciprocity law quadratic reciprocity theorem quadratic recurrence equation

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