| 摘要 |
<p>The mechanism has a control mobile (36) effectuating one revolution per month, and two display mobiles driven by respective gear trains (40, 42), where the mobiles are concentric to each other. The gear trains (40, 42) engage with respective gear teeth (36a, 36b) of the control mobile, and the display mobiles are pivotably mounted on an hour wheel (38a).</p> |
