Based on the natural radioactivity of potassium, the contents of potassium in solid potash fertilizer products were determined by radioactivity method.
基于钾的天然放射性，用放射性方法测定固体钾肥产品中的钾含量。
Based on the natural radioactivity of potassium, the contents of potassium in solid potash fertilizer products were determined by radioactivity method.
基于钾的天然放射性，用放射性方法测定固体钾肥产品中的钾含量。
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