| 摘要 |
<p>The device has an annular disc (24) carrying an n integer number of images representative of the different phases of the moon appearing during a lunar month. A moon wheel (30) drives the disc, and is controlled by an hour wheel (28) of a gear train. The wheel (30) is arranged so as to move the n images successively and by periodic jumps in one lunar month. The disc is arranged in the periphery of a movement.</p> |
