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单词 valency
释义 valency/ˈveil(ə)nsi/n. (pl. -ies) Brit. Chem. the combining power of an atom measured by the number of hydrogen atoms it can displace or combine with []【化】(原子的)化合价,价 [Late Latin valentia ‘power, competence’ from valēre ‘be well or strong’]
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