| 摘要 |
<p>The invention relates to an agricultural machine, in particular an agricultural machine provided with one or more rotating coulters, e.g. a sowing machine, at least one of the coulters comprising two discs that are provided at their outer edges with protrusions and recesses, while the discs do not change their angular position relative to each other during rotation, and at least along part of the circumference the protrusions (42) of one disc engage with the recesses (43) of the other disc. <IMAGE></p> |
