| 摘要 |
<p>A watering system driving motor for controlling and regulating the quantity of water used for movement of the drum brake - pulley - for the purpose of collecting the water hose during watering. The driving motor basically consists of a group - set - 11- fitted freely on the axis - 28a - a central gear 6a cooperating with two other gears - 4a - and 5a - which correspond to the supply - 2a - and return - 3a - valves.</p> |
