| 摘要 |
A bi-level blade (1) of a lawnmower is described, which comprises a central portion (2), an upper outward portion (6) comprises an upper cutting edge (61), a lower outward portion (7) comprises a lower cutting edge (71), which are spaced apart by a vertical separation distance (300) and which extend over the entire length of the respective outward portions (6, 7), said central portion (2) comprises a central cutting edge (21), a frontal median connection portion (3) comprises an upper median cutting edge (31). (Figure 1). |
