| 摘要 |
The levelling implement for open-air surfaces consists of a towed grating. This is formed by a number of individual grating sections (1-3) in succession in the towing direction (B), joined together by profiled lateral rails (4,5), to form a rigid assembly under load. The sections can be immediately adjacent, or there can be a 40cm. interval between them. ADVANTAGE - Will not twist, and gradually smooths out unevennesses in turf etc.
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