portal structure meaning in English
门形杆架
Examples
- Railway fixed equipment . post brackets and portal structures for signalling in aluminium alloy
铁路固定设备.铝合金信号用柱式支架和门架式结构 - C construction of a portal building on the east side of nam wan tunnel , a west portal structure on the west side thereof and a west control building ; and
C在隧道西面兴建控制大楼和隧道口建筑物及在东面兴建隧道入口大楼;及