柯林斯詞典internal energy 1. N the thermodynamic property of a system that changes by an amount equal to the work done on the system when it suffers an adiabatic change. It is the sum of the kinetic and potential energies of its constituent atoms, molecules, etc 內(nèi)能 ( symbol: , symbol: ) 返回 internal energy劍橋詞典the total amount of energy in a system , equal to the kinetic energy added to the potential energy 內(nèi)能 返回 internal energy