road-rail level crossing 铁路平交道口
longitudinal level of rail 轨道前后高低 ; 前后高低
level rail 水平尺
longitudining level of rail 轨道前后高卑
level rail transport 武汉轨道交通
Level slipping rail 水平滑轨
Support a very high level of safety for new passenger rail service..
为新铁路客运服务提供高安全保障。
Sea level rise will continue, increasing the likelihood of temporary and permanent flooding of airports, roads, rail lines and tunnels.
海平面将继续上涨,从而增加机场、道路、铁路、隧道等短期甚至永久被洪水淹没的可能。
To install the crane span before installation, camber, level of metal structure of main girder bending, trolley rail height difference, gauge deviation, diagonal bridge survey.
安装前要对起重机安装跨度,金属结构主梁的拱度、水平旁弯,小车轨道高低差、轨距偏差,桥架对角线等进行测量。
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