| 释义 |
transition metalBrE /trænˈzɪʃn metl/ NAmE /trænˈzɪʃn metl/ BrE /trænˈsɪʃn metl/ NAmE /trænˈsɪʃn metl/ (also tranˈsition element ) noun (chemistry化学) one of the group of metals in the centre of the periodic table (= a list of all the chemical elements )which form coloured compounds and often act as catalysts (= substances that make chemical reactions happen faster )过渡金属（位于元素周期表中心的一组金属元素，可形成有色化合物，常作为催化剂） |