noun 下载 🔗分享 千克，公斤 In the International System of Units, the base unit of mass; conceived of as the mass of one litre of water, but now defined by taking the fixed numerical value of the Planck constant h to be 6.626 070 15 × 10-34 when expressed in units of kg⋅m2⋅s−1. Symbol: kg Examples : "The bag of potatoes weighs five kilograms. " 这袋土豆重五公斤。 mass physics science unit amount 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 千克，公斤 The unit of weight such that a one-kilogram mass is also a one-kilogram weight. Examples : "The recipe calls for two kilograms of flour to bake the cake. " 这个蛋糕的食谱需要两公斤面粉。 mass unit science 与AI对话词汇游戏阅读练习
