索引轨 index track

轨道牵引车 track tractor ; railroad hauling car ; railroad hauling car track tractor ; Orbit-retractor

钢轨引接线 track lead

铺轨牵引车 track-laying tractor

引导正轨道 positive conducting rail

齿轨牵引车 track laying tractor

引入滑轨 [电] leading ramp

半装轨牵引车 Semicrawler Tractor

无链牵引链轨 Rack for chainless haulage system