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valency n. 原子價 原子價 valency n 1: the phenomenon of forming chemical bonds 2: (biology) a relative capacity to unite or react or interact as with antigens or a biological substrate [synonym: {valence}, {valency}] 3: (chemistry) a property of atoms or radicals; their combining power given in terms of the number of hydrogen atoms (or the equivalent) [synonym: {valence}, {valency}] |
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