| 摘要 |
<p>A track for sporting activities comprises particulate surfacing having a conditioning system for conditioning the surfacing, and a membrane for recycling liquid passing through the surfacing, the conditioning system comprising a reservoir for liquid which extends along a border of the surfacing adjacent the surfacing, and a wave propagater to cause a surge of liquid to propagate from the reservoir across and through the surfacing, the membrane extending from the reservoir and being arranged to receive liquid passing through the particulate material and to permit the liquid received thereby to pass back into the reservoir.</p> |
