| 摘要 |
<p>The element has plate shaped element with connecting devices at an opposite side (15), where adjacent covering elements are connected. Multiple projections (19) are provided at the element, which stick out from a primary side (13) of the element. A connecting device (17) is designed as a projection (20) with a web shaped cross section and other connecting device (18) is designed as an accommodating part (21) with a U-shaped cross section.</p> |
