| 单词 | 凸缘 |
| 释义 | 〔flange〕A protruding rim, edge, rib, or collar, as on a wheel or a pipe shaft, used to strengthen an object, hold it in place, or attach it to another object.凸缘：车轮或管道上突出的边、缘、肋条或环圈，用来增加物体强度、固定物体或使某一物体附着在另一物体上〔sprocket〕A cylinder with a toothed rim that engages in the perforations of photographic or movie film to pull it through a camera or projector.滚筒：齿状凸缘的筒体，通过照相机或摄影机把胶片或电影胶片转动〔mace〕A heavy medieval war club with a spiked or flanged metal head, used to crush armor.重头棍棒：中世纪一种沉重的用作武器的棍棒，带有粗短刺状的或凸缘的金属头，用来击破盔甲 |
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