| 摘要 |
<p>The sample folder has on a baseplate several blocks (4, 5) of openable sheets (6, 7) having samples of the elements. A cover (1) has recesses(2, 3) which partly expose the opened sheets of the block. The shape and disposition of at least one of the recesses is adapted to the objects to be illustrated. The cover itself may consists of block of several openable sheets. The shapes and dispositions of the cover recesses may be identical to one another or at least partly different from one another.</p> |
