カロリー
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定義
エネルギーの単位。小カロリー（cal）は水1 gの温度を1°C上昇させるエネルギー、食品カロリー（kcal）は小カロリーの1000倍。
解説
Food labels use kilocalories (kcal), often written as 'Calories' with a capital C. One kcal = 4,184 joules.
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