Terms for subject Rail transport containing first

English	Chinese
arch first lining method	先拱后墙法
first-class passenger car	一等客车
first compression wave in tunnel	隧道内初始压缩波
first-level piston rod	一级活塞杆
first sealed shotcrete	初喷封闭混凝土
first section after the departure	第一离去区段
first wave	头波
Open Shortest Path First	开放最短路径优先协议
side wall first lining method	先墙后拱法
the first law of thermodynamics	热力学第一定律