In addition to watch though shock, but strong impact in the outside world is easy to make the pendulum shaft tip or gear shaft broken, can make the vibration of the walking speed needle.

另外手表虽防震，但在外界的冲击力较强时易使摆轴尖或轮系轴颈折断，亦可使快慢针震动影响走时。

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The rotating pendulum is a typical underactuated system with a rotating shaft of the motor attached to the end which is free to spin about an axis parallel to the axis of rotation of the pendulum.

旋转摆属于典型的欠驱动系统，通过驱动杆的水平转动可使欠驱动杆由垂直下摆位置转到竖直向上位置。

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