| 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） |