| 摘要 |
Vanes (3) in the segment extend in the lengthwise direction, each being fixed to two opposite walls (1). Each fixing point comprises two lips (2a, 2b) formed from the respective wall, and bearing against opposite surfaces of the vane. The wall openings formed by bending the lips out can be sealed, typically using self-adhesive plaster. The vane can be secured to the lips, typically by a distorted portion of it which fits in a lip opening. The lips can be in line with each other in their lengthwise direction, the distance between their adhesive faces being 1 to 5 times a vane thickness.
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