| 单词 | cam |
| 释义 | cam n projecting part on a wheel designed to change the circular motion of the wheel as it turns into up-and-down or backwards-and-forwards motion of another part 凸轮（轮上的凸起部件, 用以使轮的圆周运动转变成另一部件的上下或前後运动）. |
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