履带式车辆crawler【车辆】;track-laying vehicle【车辆】
铺轨牵引车track-laying tractor
双悬臂式铺轨机track-laying machine with double cantilevers
单悬臂式铺轨机track-laying machine with single cantilever
铺轨车track-laying vehicle
铺轨机track-laying machine
铺轨龙门架track-laying gantry