| 摘要 |
<p>The device has a housing (2) which can be rotated around a central vertical axis (15) moving in two ball bearings (33,34). It accommodates several ball-filled containers (5) for the material to be ground, rotating around individual vertical axles (25). The unit (2) is closed with a thick lid (4) with ball bearings integrated (32) positioned around each of the smaller containers (5). The center of gravity is located between the two central bearings (33,34) coaxial positioned at a distance from each other.</p> |
