1) railway track
铁道线路
3) 3-track railway tunnel
三线铁路隧道
4) railway wireless channel
铁路无线信道
5) two way railway tunnel
铁路双线隧道
1.
This paper presents the study results on the aerodynamic characteristics for two way railway tunnel ventilation,which include the combine characteristics of jet fan used,the influence of the piston wind in the tunnel and the concentration distribution and the dilution principle of harmful gases.
对铁路双线隧道通风的空气动力特性：射流风机的组合特性、活塞风的影响、有害气体浓度分布和稀释原理等进行了分析研究。
补充资料："地下铁道"
见美国废奴运动。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条