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Oil / petroleum
containing
同位素 比
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同位素比
值
isotopic ratio
同位素比
值
isotope ratio
同位素比
放射性
isotope specific activity
同位素比
示踪剂法
isotope ratio tracer method
同位素比
质谱计
isotope ratio mass spectrometer
氢
同位素比
值
hydrogen iso tope ratio
氦
同位素比
值
helium isotope ratio
氮
同位素比
值
nitrogen isotope ratio
硫
同位素比
值
sulfur isotope ratio
碳
同位素比
carbon isotope ratio
稳定
同位素比
分析
stable isotope ratio analysis
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