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单词 compound
释义
compound

Chemistry
  • A substance formed by the combination of elements in fixed proportions. The formation of a compound involves a chemical reaction; i.e. there is a change in the configuration of the valence electrons of the atoms. Compounds, unlike mixtures, cannot be separated by physical means. See also molecule.


Chemical Engineering
  • A substance of uniform composition throughout its bulk and containing two or more elements in a state of chemical combination. Compounds are formed when elements react and are chemically joined. Unlike a mixture, a compound can only be separated into its components by chemical reaction.


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