| 单词 | transition metal |
| 释义 | transition metal noun countable (also tran^sition _element) specialized ■any of a group of metallic elements that includes copper and gold, which show more than one valency (= number of hydrogen atoms that can combine with one of its atoms to form a compound) 过渡金属（一组金属元素之一；该组金属元素包括铜和金，当氢原子与其原子之一形成一种化合物时，这种金属所显示的氢原子价数超过一个） |
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