catenary, travelator, viaduct, rail, magnetic levitation, trackage, conveyor, cantilever, tram, mass rapid transit, lightrail, falsework, maglev, caissons, sidings, streetcar, roadbed, crosshead, crossbeams, prestressed, mrt, coiler, impedances, waveguide, aerofoil, bikeway, pantograph, busbar, overpass, electromagnets, aerotrain, gyratory, resonant cavity, frustum, stators, gondola, counterflow, monorail, trains, sheave, trackless trolley, detrain, monopoles, pylons, handwheel, gantry, tramway, microchannel, termini, hexapod, kilovolts, subway, venturi, girder, underbridge, bascule bridge, coupler, servomotor, trolley, interferometer, photocell, eyebolt, treadles, inductances, lamella, aerial tramway, handrail, crosspieces, rotor shaft, trolly, bascule, klystron, linac, soleplate, trestles, flexure, crossway, swage, switchyard, monochromator, windings, footway, proton accelerator, helix, bailey bridge, interchanges, triaxial, unloader, airfoil, crossties, commuter, capstan, tacoma narrows bridge, baseplate, underpass, optical fiber, manway, pedestrian bridge, overcrossing, railway, hoistway, graving dock, diaphragms, chute, raceway, strip, batten, diaphragm, flange, hopper, nozzle, rails, ramp, solenoid, track, wire, aerial, antenna, beam, blades, cam