| 摘要 |
An earth compacting roller having toothlike feet projecting from its cylindrical surface, the feet being arranged in circumferentially and axially spaced staggered relationship and the feet having an elliptical cross section with the major axis of the ellipse normal to the roller axis and the surfaces of the feet so shaped that the leading and trailing edge surfaces of at least the base portions of the feet are defined by curved lines that are substantially involutes generated from a base circle the radius of which is no larger than that of the cylindrical surface of the roller.
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