The different parts of these are called the tube, jacket, hoops, locking rings, trunnion rings, wire winding, etc. 佚名.神奇的知识之书.
Over the jacket lie the hoops, six or seven of these being used in a big gun. 佚名.神奇的知识之书.
It is useful for the making of chains, tools, carriage axles, joining shafting, wires, and pipes, mending bands, tires, hoops, and lengthening and shortening bolts, bars, etc. Edward W. Byrn.十九世纪发明进展.
The parts of such a gun are known as the liner, the tube, the jacket and the hoops. 佚名.神奇的知识之书.
The liner and tube are then placed upright in an assembling pit, the jacket and hoops shrunk on, and the finishing work done, as above said, the breech mechanism being finally fitted. 佚名.神奇的知识之书.
He sat on a bench, with his hoops and ruffles and high powdered head, his point laced lappets, &c. 哈里特·威尔逊.哈里特·威尔逊回忆录.