第二种 大卡路里或千卡热量 符号 Cal kcal 也称为食物卡路里和类似名称|

第二种 大卡路里或千卡热量 符号 Cal kcal 也称为食物卡路里和类似名称

A calorie or calory (archaic) is a unit of energy. Various definitions exist but fall into two broad categories. The first, the small calorie, or gram calorie (symbol: cal), is defined as the amount of energy needed to raise the temperature of one gram of water by one degree Celsius at a pressure of one atmosphere.[1] The second, the large calorie or kilogram calorie (symbols: Cal, kcal), also known as the food calorie and similar names,[2] is defined in terms of the kilogram rather than the gram. It is equal to 1,000 small calories or 1 kilocalorie (symbol: kcal).[1]

卡路里或卡路里（古）是能量单位。存在各种定义，但分为两大类。第一种是小卡路里，或称克卡路里（符号：cal），定义为在一种大气压力下使一克水的温度升高1摄氏度所需的能量量。[1]第二种是大卡路里或千克卡路里（符号：Cal，kcal），也称为fo。OD卡路里和类似的名称，[2 ]是用千克而不是克来定义的。它等于1000卡路里或1千卡（符号：千卡）。[ 1 ]

|第二种、大卡路里或千卡热量、符号、Cal、kcal、也称为食物卡路里和类似名称