separations离析物separationn.分离；分居；缺口；分隔线；[化]离析；【航】间隔separation standard间隔标准separation variable分离变量法separation relation分离关系separation of blood血液分离separation negative分色底片Separation of waves波浪分离separation by shape形状选矿separation property分离性separation of tread胎面剥落separation analysis分离分析