【运输】辊柱套筒，适合皮带机清洗

roller and compactor【公路】

smooth wheel roller【公路】

guide, roller, cable

printing roller turning and roll-finishing machine

roller mill【机】;roller press【机】;wheeling machine【皮革】

single-slat roller shutter

superfinishing machine for conical roller

underfeed grate, cylindrical roller grate