安装洞口 assembly opening
窗洞口传热 heat transfer loss of window surrounding
窗户洞口 window opening
大跨隧道洞口 long span tunnel
洞口病害 portal disease
洞口不良地质段 Tunnel Portal in Unfavourable Geological Section
洞口沉降 Deformation on entrance
洞口段 the outlet section; Entrance; portal section
洞口段施工 Construction of the entrance; Portal construction; Portal section construction
洞口附加钢筋 additional bar around opening
洞口改造 hole mouth transformation
洞口钢筋 trimming bar
洞口滑坍 portal slide
洞口结构 structure of the window
洞口景观 entrance landscape
洞口宽度 opening size
洞口排放 portal emission
洞口偏压 asymmetrical-loaded portal
洞口气温 Tunnel portal temperature