在一个同位素的原子中中子数减去质子数，同位数是放射性的指示。
The number of neutrons minus the number of protons in the atom of an isotope. isotopic number is an indication of radioactivity.
针对发射光谱法测量1 5n同位数原子丰度产生误差的原因进行了详细分析。
The error produced in measuring 15n abundance by emissive optical spectrometry is analyzed in detail.
针对发射光谱法测量1 5n同位数原子丰度产生误差的原因进行了详细分析。
The error produced in measuring 15n abundance by emissive optical spectrometry is analyzed in detail.
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