Trunnion

(n.) A cylindrical projection on each side of a piece, whether gun, mortar, or howitzer, serving to support it on the cheeks of the carriage. See Illust. of Cannon.

(n.) A gudgeon on each side of an oscillating steam cylinder, to support it. It is usually tubular, to convey steam.

校对:鲁本

• 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.
• It is erected on a solid masonry pillar 14 by 7 feet at the base, which carries on its top, on trunnions, an oak beam 20 feet long and 12 by 14 inches thick. Edward W. Byrn. 十九世纪发明进展.

整理:玛米