基本解释贸易部单位；度（英国的电量计算单位）英英字典柯林斯英英字典 a unit of electrical energy equal to 1 kilowatt-hour ( abbr: BTU)Board of Trade Unit剑桥字典Board of Trade Unit柯林斯字典专业释义地球科学贸易部单位交通运输工程贸易部单位