| 摘要 |
TOOTHBRUSH A manually operable tool for cleaning the teeth on both sides the tongue and the cheek side at the same time. The toothbrush comprises twin-brushes which face each other and are on twin flexible brush-holders. On the brushholders are also the twin-brushes vertical positioners. The twin flexible brush-holders are in the twin hollow toothbrush handle partly mounted. That toothbrush handle has also cleaning slots which also may prevent the operator's hand or fingers from slipping.
|
