grider meaning in English

超真实
主梁

Analysis on structure and force principle of composite box - grider bridge with corrugated steel webs
组合楼盖竖向承重体系中楼板变形及内力分析
Three factors of carrying capacity , shippmg , traffic flux are considered among alteration and upgrade . carrying capacity upgrade aims at simply - supported girder bridge and arc bridge ( truss bridge and double arch bridge ) of sea - route nets . to navigation , headroom chiefly is required , secondlythe jacking - up technique and economical analysis are given attention to two or morethings . the simply - supported grider bridge and mono - arch bridge are touched upon in navigation upgrade
在升级改造中主要探讨了承载力升级、通航升级、交通流量升级三个因素。其中承载力升级主要针对航道网上的简支梁桥和拱桥(桁架拱桥和双曲拱桥) 。