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单词 kcal
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kcal.
kcal. n. (also kcal) kilocalorie(s).
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the world > matter > physics > electromagnetic radiation > heat > [noun] > unit of heat > of specific amount
kilocalorie1894
gram calorie1902
Q1952
kcal.1954
1954 R. T. Sanderson Introd. Chem. iv. 43 Larger quantities of heat are measured in kilocalories, which are 1000 calories each. They are sometimes abbreviated as Cal with a capital C; more commonly they are simply kcal.
1964 N. G. Clark Mod. Org. Chem. iii. 29 The energy required to bring about this rotation is seen to be 5 kcal, a relatively trivial amount capable of being supplied by the thermal motion of neighbouring molecules.
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