| 摘要 |
The carrier belt has an asymmetrical arrangement of short (2) and long (3) cutouts and slots (4) in it. The cutouts are in pairs, a long one opposite a short one, their center lines are congruent and their short sides are directed towards the relevant edge of the carrier belt. The apexes of the short ones fall short of the belt center line but those of the long ones cross it. |
