2005/01/05 | 同位素稀释[Isotopic Dilution]
类别(℃〖化学〗) | 评论(0) | 阅读(16) | 发表于 13:01

where is the weight of the compound in a mixture, is the weight of a radioactive compound added, is the activity of the added compound, and is the activity of a fixed purified sample.
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