V2EX kilocalorie

Kilocalorie

释义 Definition

名词 (n.) 千卡,大卡。一种热量单位,等于1000卡路里,常用于衡量食物所含的能量。在日常生活中,人们常说的"卡路里"实际上指的就是千卡(kilocalorie)。

发音 Pronunciation

/klklri/(英) /klklri/(美)

例句 Examples

A banana contains about 90 kilocalories.
一根香蕉大约含有90千卡的热量。

Nutritionists recommend that the average adult consume approximately 2,000 kilocalories per day, though the exact amount varies depending on age, gender, and level of physical activity.
营养学家建议成年人每天大约摄入2000千卡的热量,但具体数值因年龄、性别和运动量的不同而有所差异。

词源 Etymology

该词由前缀 kilo-calorie 组合而成。kilo- 来自希腊语 khilioi,意为"一千";calorie 来自拉丁语 calor,意为"热量"。calorie 一词最早由法国化学家尼古拉克莱芒(Nicolas Clément)在19世纪初提出,用于衡量热能。加上 kilo- 前缀后,表示1000个小卡路里(即1大),主要用于食品营养学领域。

相关词汇 Related Words

文学与文献引用 Literary References

  • 在威尔伯阿特沃特(Wilbur Atwater)的营养学研究论文中,kilocalorie 被广泛用作食物能量的标准计量单位,奠定了现代营养科学的基础。
  • 在迈克尔波伦(Michael Pollan)的著作 In Defense of Food 中,讨论了现代社会对 kilocalorie 计量的过度关注与饮食文化之间的矛盾。
  • 在世界卫生组织(WHO)及各国膳食指南中,kilocalorie 是描述每日推荐摄入量的核心术语。
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