| 单词 | isotope |
| 释义 | [/ˈaɪsətəup; ˋaɪsəˏtop/] n one of two or more forms of a chemical element with different atomic weight and different nuclear properties but the same chemical properties 同位素: radioactive isotopes, ie unstable forms of atoms used in medicine and industry 放射性同位素（用於医学和工业）. |
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