1.
Design and Construction Technology of CPG500 Long-Track-Laying Machine;

CPG500型长轨条铺轨机组研制
2.
Transfer Trajectory Design for Halo Orbit with Multiple Constraints

约束条件下的Halo轨道转移轨道设计
3.
prestressed concrete rail fastening

预应力混凝土轨条扣件
4.
Trains run on two rails.

火车在两条钢轨上奔驰。
5.
He suggested that a double railway-tunnel should be built.

他提议建一条双轨隧道,
6.
It's a railway with a double track

这是一条双轨铁路。
7.
Temperature stress analysis of high accuracy rocket sled rail

高精度火箭橇滑轨长轨温度应力分析
8.
Modeling and Simulation of Track Circuit with Ballast-Less Track

无碴轨道条件下轨道电路的建模与仿真
9.
Transition Pattern,Way of Economic Growth and Theoretical Paradigm of Transition;

转轨路径、经济增长方式与转轨理论范式
10.
Car Detection of Laser Long-chord Track and Fine Adjustment on Ballastless Track

无砟轨道激光长弦轨检小车检测及精调技术
11.
Model of chaff motion trajectory and curtain wall diffusion in air environment

大气环境下箔条运动轨迹及箔条幕扩散模型
12.
a line of track providing a runway for wheels.

一条为火车准备的铁轨线。
13.
current rail gap indicator sign

牵引电流轨条间断表示标
14.
Technical requirements of heavy duty railway motor trolley

GB/T10082-1996重型轨道车技术条件
15.
Most people suppose that there must be a railway line underneath it.

大多数人认为它下面肯定有一条铁轨。
16.
The tram is being swithed on to another track.

电车正被移至另外一条轨道上。
17.
The two railway lines link up at the station.

两条铁路线在这个车站接轨。
18.
The track was laid down in the 19th century and is in need of repair.

这条铁轨建于19世纪,需要修复了。