比热容
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定义
使1 kg物质温度升高1°C（或1 K）所需的能量。
解释
Water has an exceptionally high specific heat capacity of 4,186 J/(kg·K), which is why oceans moderate coastal climates and why water is used in radiators. By contrast, copper is only 385 J/(kg·K), meaning it heats and cools far more rapidly. This property governs everything from cooking times to engine cooling system design.
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