| 摘要 |
<p>The attachment is drawn behind a tractor and can be used for spraying crops or for harrowing the soil surface. It is in the form of a three part beam, positioned perpendicular to the tractor's movement, with the centre part fixed to the tractor. Each outer part is telescopically adjustable and the beam is supported on wheels. The support bars for the spray heads or harrow tools are positioned under the beam, being adjustable for height. The heads or tools are carried on vertical bars which are adjustable horizontally along the support bars by sliding and also adjustable for height.</p> |
