| 摘要 |
<p>The rotary mower knife has blade surfaces parallel to the plane of rotation at the ends, with surfaces sloping upwards in the direction of rotation starting at these ends. There can be a sloping surface at one end only, and the blade ends can be at different levels in relation to the plane of rotation. One half can have a cutting portion and a sloping surface, while the other is shorter, with a balance weight.</p> |
