| 摘要 |
The assembly according to the invention is intended to be arranged on the bottom wall 1 of a pool and comprises a trough 2 which is open towards the inside of the said pool and receives a grating 3 at a distance from its bottom 4, at least one conduit 5 for supplying fluid into the trough 2, at least one main conduit connected to the conduit or conduits 5, and at least one source for supply of fluid. The assembly is characterised essentially in that the conduits 5 for supplying fluid into the trough 2 are arranged under the bottom 4 of the said trough and communicate with the inside of the latter by way of openings 7. <IMAGE>
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