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词汇 British thermal unit
释义 British thermal unitn.(名词)abbr. Btu【缩写】
    1. The quantity of heat required to raise the temperature of one pound of water from 60° to 61°F at a constant pressure of one atmosphere.英(制)热单位:在一个大气压的常压下,把1磅水从60°F升高到61°F温度所需的热量
    1. The quantity of heat equal to 1/180 of the heat required to raise the temperature of one pound of water from 32° to 212°F at a constant pressure of one atmosphere.英(制)热单位:与在一个大气压的常压下把1磅水从32°F升高到212°F温度所需热量的1/180相等的热量
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