joule
/dʒuːl/(缩略词： J)
noun
- the SI unit of work or energy, equal to the work done by a force of one newton when its point of application moves one metre in the direction of action of the force, equivalent to one 3,600th of a watt-hour.焦耳（功和能量的国际公制单位）。
词源
late 19th cent.: named after J. P. JOULE.