n.a coiled bedspring in a frame that is covered with cloth
box spring例句
BOX SPRING Box-spring Box-spring Box spring corner guard Box spring stapler apparatus and method Box spring with plastic band support for mattress Automatic box spring fastening apparatus Ventilated mattress-box spring combination FAILURE INVESTIGATION OF AXLE BOX SPRING OF RAILWAY 16T COACHES SPRING AND FRAME ASSEMBLY PARTICULARLY FOR BOX SPRINGS Lateral Stiffness Analysis of Axle - box Spring for Rail Vehicles Research on mechanism of fatigue crack of high speed train axle box spring Research on the quality inspection system of vehicle handrail box spring assembly based on machine vision
