在车架的后方固定一个喷雾泵及药箱，喷雾泵与药箱用软管连接，与变速箱用皮带传动。
In rear of frame, there is sprayer and pesticide box which are linked by soft tube and driven by belt.
第三是在机泵皮带传动时，皮带的紧边应在下，以提高传动效率。
The third is in the Pump transmission belt, the belt should bear in the next-to enhance the transmission efficiency.
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