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THE SQUARE-ROOT FORMULA FOR O-17 ABUNDANCE AND THE ATOMIC WEIGHT OF OXYGEN
<正> Aside from the approximate analysis for ~(17)O by mass spectrometry in the early 1930s, precise measurement was begun by Nier in 1950, but he calibrated his mass spectrometer with enriched argon isotopes for the inlet gas CO_2. His classical
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Chinese Science Bulletin
1989年10期

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