| 释义 |
sprock·et AHD[sprŏkʹĭt] D.J.[ˈsprɒkɪt]K.K.[ˈsprɑkɪt]n.（名词）- Any of various toothlike projections arranged on a wheel rim to engage the links of a chain.链齿：在轮缘上的牙状凸出物，用以链条得以连续运动
- 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
- [Origin unknown] [不知起源]
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