separations离析物separationn.分离；分居；缺口；分隔线；[化]离析；【航】间隔separation facility分离装置separation constant分离常数separation function分离函数Separation of virus病毒分离separation of tooth分离牙齿separation sequence[化] 分离序列Separation of roles角色分离separation by width宽度分级separation velocity分离速度separation distance间距