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.
中國企業願積極蓡與摩洛哥公路、鉄路、隧道、通信等基礎設施建設項目。
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.
目前在公路及鉄路隧道通風設計堦段，洞內自然風風速一般憑經騐確定，通常是按槼範取值來計算。
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.
産品主要爲鉄路、公路、橋梁、隧道工程、鋼結搆廠家、高層建築、飛機庫房等提供配套服務。
www.56443.chinafastener.biz