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用于痕量元素分析，存储有机溶剂。
本文讨论了痕量元素分析中随机误差的规律性。
The regularity of random error of trace element analysis is discussed.
本文论述了生物材料的痕量元素分析前处理的一些基本要求。
In this paper, the main requirements of the pretreatment in analysing biological trace elements were discussed.
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