| 摘要 |
<p>Platforms for material to be composted are covered by an inflatable bubble having an air lock for ingress and egress of the material and of the operating personnel. Conduits are provided for introducing air under pressure into the bubble to maintain the same inflated, and to pass through the composting material so as to enhance the composting process, and other conduits are provided into which the air can pass to be evacuated from the bubble.</p> |
