| 摘要 |
The apparatus has a case containing an electric motor for driving a roller around a central shaft. The roller has row of tweezers, each formed by two blades (20). The blades are connected at their base by a spacer (43) to form a monoblock unit (44). The monoblock units are mounted in parallel and partly shifted longitudinally with respect to each other, where the units and the roller belong to the same row. |
