| 摘要 |
The bush unit has a cylindrical cover (5) with a roof (6), no bottom, and in which the head (2) rotary shaft (4) which is fitted parallel to the cover central axis (7). The head fits in the cover between the roof and the opposite end (8). The chains (3) can pivot outwards freely in the cover which has an aperture in its cover surface. This allows growth material which has been cleared from the soil to pass outwards. A container (11) is incorporated for reception of such material. |
