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碳水化物及脂肪碳水化物及脂肪在体内的主要功用是供给能量,蛋白质也供给部分能量,合理营养要求三者有适宜的比倒。多数国家在制订膳食营养素供给量标准时不规定碳水化物及脂肪的供给数量,仅提出适宜的比例。如我国在1981年修订膳食营养素供给量时,提出膳食中除由蛋白质提供的能量应占总能量的10～14%外,碳水化合物提供的能量应占总
Carbohydrates and fatty carbohydrates and fat in the body’s main function is to supply energy, protein also supplies some energy, reasonable nutrition requirements of the three appropriate ratio down. Most countries in the formulation of dietary nutrient supply standards does not provide the amount of carbohydrate and fat supply, only to put forward the appropriate ratio. For example, when China revised its dietary nutrient supply in 1981, it proposed that in addition to the energy provided by the protein in the diet should account for 10-14% of the total energy, the energy provided by carbohydrates should account for the total