1. An International System unit of power equal to one joule per second. 
   瓦特国际功率单位，等于1焦耳／秒
2. A unit of energy absorbed from ionizing radiation, equal to100 ergs per gram or0.01 joule per kilogram of irradiated material. 
   拉德电离辐射吸收的能量的单位，等于受照射物质每克100格或每千克0。01焦耳
3. a unit of power equal to 1 joule per second; the power dissipated by a current of 1 ampere flowing across a resistance of 1 ohm. 
   功率单位；电压为伏特通过电流是安培时功率是瓦特。
4. Since the erg , as I have said , is an inconveniently small unit the amount of 10,000,000 ergs is declared equivalent to one joule. 
   如我所说，由于尔格这个单位很小，使用很不方便，所以把10,000,000尔格定为1焦耳。

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