In his honor, the value of the mechanical equivalent of heat is usually represented by the letter J, and a standard unit of work is called the joule.是什么意思_In his honor, the value of the mechanical equivalent of heat is usually represented by the letter J, and a standard unit of work is called the joule.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句