| 释义 |
iso·topeBrE /ˈaɪsətəʊp/ NAmE /ˈaɪsətoʊp/ noun (physics物理, chemistry化学) one of two or more forms of a chemical element which have the same number of protons but a different number of neutrons in their atoms . They have different physical properties (= characteristics ) but the same chemical ones 同位素◆ radioactive isotopes 放射性同位素◆ the many isotopes of carbon 碳的诸多同位素 |