model free-electron自由电子模型
free magnetic electron spectrometer无铁电子磁谱仪
free-electron collision自由电子碰撞
collision free-electron自由电子碰撞
free-electron maser自由电子脉塞
free-electron gas自由电子气
free-electron自由电子
free-electron theory自由电子理论
free-electron model自由电子模型
N（名词） any electron that is not attached to an ion, atom, or molecule and is free to move under the influence of an applied electric or magnetic field 自由电子