| 摘要 |
An accessory (1) that can be attached to any of a variety of heavy machinery such as bulldozers, backhoes, tractors, etc, is used for a final grading and leveling pass and is comprised of, a grating (1) having a lattice (2, 3) arrangement with a "V" pattern and a set of springs (9) disposed at each sid e of a hydraulic piston (6) which controls the level of the grating.
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