| 摘要 |
Binding element (1) for a bundle of leaves (9), whereby the binding element (1) comprises a spine (2) for enclosing an edge of the bundle (9) and two plastic cover sheets (3,4) fastened to the spine (2), characterised in that a first of the cover sheets (3) is transparent and the second of the cover sheets (4) is translucent but not transparent. |
