| 摘要 |
<p>Canvasses for controlling forest fires and prescribed burning and for protecting persons and property, comprising at least one reflective metal sheet accompanied for the protection and thermal insulation thereof by at least one layer of cloth or felt of artificial mineral fibres, metal fabrics and/or mineral-based sheets of paper, all such layers and sheets being joined by mechanical means, principally sewing with metal thread. Such canvases retain the consistency of flexible fabric and may be employed portably or as fixed installations, whether in a permanent or temporary manner.</p> |
