名词
中文翻译：Unknown
同义词：
['isotopeabundance', 'isotopic composition']
例句：
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1. The study of isotopicabundance in rocks is crucial for understanding theEarth's history.
研究岩石中的同位素丰度对于理解地球历史至关重要。
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2. The isotopic composition of the samplesuggests that it was formed under different conditionsthan the surrounding rock.
样本的同位素组成表明，它形成于与周围岩石不同的条件下。
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3. The isotopic abundanceof carbon in the atmosphere has a significantimpact on climate change.
大气中碳的同位素丰度对气候变化有重大影响。