tracklaying vehicle履带式车辆
tracklaying base铺轨基地
tracklaying tractor链轨式拖拉机
tracklaying train铺轨列车
tracklaying crane铺轨起重机
tracklaying crane detail铺轨起重机
ADJ（形容词） (of a vehicle) having an endless jointed metal band around the wheels (交通工具)铺轨