| 摘要 |
<p>The assembly has a mould (3), formed from a ductile insulating material that is inflammable and fire-retardant, swelling under flaming effect or temperature influence. The mold is inserted into a break-through (4) of a fire-retardant wall (2).The mold exhibits an open cavity into which a socket is disposed. The socket exhibits a latch clamp, and is pushed along the front side of the wall.</p> |
