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单词 energy change
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energy change
energy change n. a change in the amount or type of energy possessed by a body or system before and after a chemical reaction, change of state, or other physical process.
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1878 A. S. Herschel in Nature 14 Feb. 303/1 The sum of the energy changes between the two given points is independent of the course or lapse of time in which the final point is reached.
1964 L. H. Van Vlack Elements Materials Sci. (ed. 2) x. 281 The energy change which is of importance in a chemical reaction is the decrease in free energy of the reaction.
2014 Proc. National Acad. Sci. U.S.A. 111 15070/1 This energy change represents only a small contribution to the overall catalytic effect.
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