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单词 valency
释义

WordReference Random House Unabridged Dictionary of American English © 2024
va•len•cy  (vālən sē),USA pronunciation n., pl. -cies. [Chem.]
  1. Chemistryvalence.

Collins Concise English Dictionary © HarperCollins Publishers::
valency /ˈveɪlənsɪ/, esp US Canadian valence n ( pl -cies, -ces)
  1. a property of atoms or groups, equal to the number of atoms of hydrogen that the atom or group could combine with or displace in forming compounds
  2. the number of satellite noun phrases with which a verb combines
Etymology: 19th Century: from Latin valentia strength, from valēre to be strong
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