| 摘要 |
<p>The plowshare (2) has a wing (6) extending along one side of a vertical working part (4) of a standard disk blade body (3). The wing is provided with a cutting edge formed by a front edge i.e. forward or leading edge (7) of the wing. The forward or leading edge of the wing comprises a series of fingers (11) or teeth such as fingers or teeth of a fork, to facilitate penetration of the wing in the soil.</p> |
