| 摘要 |
<p>The seed sowing machine is constructed on a towed chassis (53), which carries the reference elements (17), by pivots (10), which allow the reference elements to move vertically from the transport position into the working position. The seeding mechanism (56) is supported by a carrying structure (61), which is linked to the chassis by similar pivots (81). In the working position, retractable devices (86,148) are fitted to limit the displacements of the reference element and the carrying structure.</p> |
