| 摘要 |
<p>The device comprises a scraper member 3 and a Second Scraper member fully adjustable attached to a flexible shaped rod 10 characterised by said second Scraper member, being constructed with a roller ball bearing 11 to act in use between projecting teeth 15 on the outer surface of a rotary soil element 16, to facilitate the free running, and cleaning of soil particle build up on the said outer surface, of the rotary soil element 16.</p> |
