| 摘要 |
A land grader for grading an unprepared or partially prepared soil surface, as a step in the preparation of a roadbed. The land grader has a frame fixed at a forward end to the tractor and is supported at a rearward end to a plurality of tamping wheels. On the frame are mounted a plurality of rotary cutters which are offset laterally and axially from one another along an angle to the direction of travel. The rotary cutters have scraper blades mounted between them.
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