| 摘要 |
In a switchboard (1) with peripheral edge sections (2) and stiffening element bearers (4 and 5) between them to stiffen the facing (3), the securing points (6) are on or near stiffening element bearers (4) at a distance from the edge sections (2); all stiffening element bearers (4 and 5) have a uniform outer cross-section but the stiffening element bearer(s) (4) beside the securing point (6) is/are reinforced so as to transmit the securing forces smoothly to the switchboard (1). |
