lifting ring造句

• The clamp has an adjusting screw to tighten onto the part and a lifting ring to attach a hoist cable.
• It was long, wide, and high, with double doors on one end, was mounted on skids, and had lifting rings on the top four corners.
• The holdback is attached to the lifting ring of the bag, and should be attached by a strong cable to an anchor point it cannot lift . The SWL of the holdback should be at least equal to the lifting capacity of the bag.
• Notable features included : replaceable lifting ring screwed into the dome of the box, body and roof of box cast as one piece, large easy-to-read collection time plate, all surface details and collection plate window recessed to give a perfect cylindrical outline, integral restrictor plate, know colloquially as a " Belfast Flap " to restrict posting to letters only and a flanged shallow base suitable for installation in modern buildings, shopping centres and other urban areas.