portaln.入口；大门；门静脉；[计]门户adj.门静脉的；肝门的portal sump峒门集水坑portal span门架跨距Portal Flat门户平台portal veinn.门静脉portal pier门式墩portal type门式,门形portal frame门式钢架,龙门架portal space[医] 门静脉隙Portal triad肝门三联征(三管系统征)portal veins门静脉