| 摘要 |
Drain trench body areal units are known which have conical spacer elements (10 10 ) which are connected to one another via a base (1). The spacer elements (10 10 ) have lateral surfaces (11) which extend in a wavy shape in cross section and which comprise wave crests (12) and wave troughs (14) which follow one another. In order to ensure maximum strength with minimum material a construction is proposed in which the wave crests merge into the wave troughs (14) via transition regions (13) wherein the transition regions (13) have a smaller material thickness than the wave troughs (14). |
