词汇	book carrier
释义	book carrier 原件架
随便看	potential energy line potential energy map potential energy of affection potential energy of a particle potential energy of a system potential energy of deformation potential energy of elastic body potential energy of knowledge potential energy of molecule potential energy of particle potential energy of spring potential energy of strain potential energy of stress potential energy of system potential energy of wave potential energy principle potential energy profile potential energy reference point Potential energy-saving potential energy shortage potential energy source Potential energy storage system potential evapotran spiration potential evapotranspiration ratio potential energy