chain track  链轨

chain track guard  护链槽

chain-track tractor  履带式拖拉机

track chain bushing  履带轴套

track chain component  履带零部件

track chain life  履带寿命

track chain link  履带链连接

vertical circulation parking equipment with fixed track chain drive  导轨链传动垂直循环停车装置

engineering district；maintenance of way section；track division；track district；track maintenance division  工务段

jointless line；continuously welded rail track；jointless track  无缝线路

non-NTDS track {dummy track}  非开战术系统资料追瞄

replacing and laying track with track panel  轨排换铺

track to track fusion  航迹融合

track-to-track association  航迹关联

track-to-track fusion  航迹融合

track-to-track moving time  轨至轨移动时间

transforming single track into double track  单改双线

double - track existing single track line  增建二线

chain risk of supply chain  供应链链风险