british thermal unit是什么意思_british thermal unit用英语怎么说_british thermal unit的翻译_british thermal unit翻译成_british thermal unit的中文意思_british thermal unit怎么读,british thermal unit的读音,british thermal unit的用法,british thermal unit的例句

Noun

• 1. a unit of heat equal to the amount of heat required to raise one pound of water one degree Fahrenheit at one atmosphere pressure; equivalent to 251.997 calories