| 摘要 |
<p>Laying arrangement comprises a plastic film (10) having protruding regions (12, 14) and recessed regions (24). Pipes from the recessed regions are fixed between the protruding regions. Holes (16, 18, 20) are formed in a few protruding regions and holes (26, 28) are formed in a few recessed regions. Preferred Features: A few neighboring recessed regions are connected to each other by a recess in a protruding region arranged between them. A protruding region has a central hole around which recesses are arranged within the protruding region.</p> |
