road railway tunnel

基本解释

Chinese businesses would like to actively participate in Morocco's infrastructure construction programs in the areas of road, railway, tunnel and communications.
中国企业愿积极参与摩洛哥公路、铁路、隧道、通信等基础设施建设项目。
www.fmprc.gov.cn
At present in the design phase of ventilation system of road & railway tunnel, generally rule of thumb to determine the natural wind speed value inside the tunnel, normally based on the specification.
目前在公路及铁路隧道通风设计阶段，洞内自然风风速一般凭经验确定，通常是按规范取值来计算。
And the products can be applied in kinds of industrial fields such as the railway, road, bridge, tunnel projects, steel structure factory houses, high-rise buildings, aircraft storehouse and so on.
产品主要为铁路、公路、桥梁、隧道工程、钢结构厂家、高层建筑、飞机库房等提供配套服务。
www.56443.chinafastener.biz