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单词 accessory factor
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accessory factor
accessory factor n. (more fully accessory food factor) now historical = vitamin n. 1The terms accessory food factor and vitamin were for a time used interchangeably.
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1912 F. G. Hopkins in Jrnl. Physiol. 44 425 (title) Feeding Experiments Illustrating the Importance of Accessory Factors in Normal Dietaries.
1919 Lancet 23 Aug. 338/1 It would be interesting to discover whether they [sc. pickles] fill a gap also by supplying accessory food factors.
1929 Nelson's Encycl. IV. 49A/3 Vitamins..are extremely important accessory food factors.
1993 New Scientist 27 Nov. 39/2 The discovery of the accessory food factor later known as vitamin K.
extracted from accessoryn.adj.
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