形容词
中文翻译：Unknown
同义词：
['isotope', 'isotope']
例句：
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1.The scientists are studying the isotopic composition of the sample.
科学家们正在研究样本的同位素组成。
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2.The isotopic ratio in the sample is important for understanding its origin.
样本中的同位素比例对于理解其来源至关重要。
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3. The isotopic analysis revealed that the sample contained trace amounts of rare earth elements.
同位素分析显示，样本中存在微量稀有元素。