| 摘要 |
<p>The book shelves are assembled to side members, each shelf having a slot at each end of different length which fits over the side members and the rests of shoulders formed along the edges. A cut-out in each slot receives a disc. The disc is provided with a slot for a peg whic locks it in the slot cut in the side members. This fixing keeps the shelves in place when they are used to lift the complete assembly.</p> |
