| 摘要 |
The wave-form teeth (2) of the blade have a wave length of approx. 25 - 30 mm and a total wave height (3) of approx. 2.8 mm. One side of the blade is flat up to a distance of approx. 2.7 - 3 mm from its periphery, and from this point the side inclines at approx. 15 deg. The other side of the blade is flat up to a distance of approx. 15 - 17 mm from the periphery, from which point it slopes at approx. 5 deg. until it reaches a distance of approx. 2.7 - 3 mm from the periphery. From this point onwards, it inclines by a further approx. 10 deg. to the plane of the blade. |
