energy energie 能量 internal energy inwendige energie The internal energy of a thermodynamic system, or a body with well-defined boundaries is the total of the kinetic energy due to the motion of molecules (translational, rotational, vibrational) and the potential energy associated with the vibrational and electric energy of atoms within molecules or crystals. U British thermal unit (39 °F) 英国热力单位（39°F） British thermal unit (59 °F) 英国热力单位（59°F） British thermal unit (60 °F) 英国热力单位（60°F） British thermal unit (International Table) 英国热力单位（国际表） British thermal unit (mean) 英国热力单位（平均） British thermal unit (thermochemical) 英国热力单位（热力化学） attojoule attojoule calorie (15 °C) calorie (15 °C) calorie (20 °C) calorie (20 °C) calorie (International Table) calorie (mean) calorie (thermochemical) centijoule centijoule decajoule decajoule decijoule decijoule electronvolt electronvolt 电子伏特 erg erg 尔格 exajoule exajoule femtojoule femtojoule foot poundal gigaelectronvolt gigaelectronvolt gigajoule gigajoule gigawatt hour hectojoule hectojoule joule joule 焦耳 kilocalorie (mean) kiloelectronvolt kiloelectronvolt kilojoule kilojoule kilowatt hour megaelectronvolt megaelectronvolt megaerg megajoule megajoule megawatt hour microjoule microjoule micronewton metre micronewton meter millijoule millijoule millinewton metre millinewton meter nanojoule nanojoule newton metre newton meter petajoule petajoule picojoule picojoule quad terajoule terajoule terawatt hour therm (EC) therm (US) ton of TNT watt hour