| 摘要 |
<p>A smoothing device for the smoothing the surface of a layer of sand, soil, gravel, cinders, aggregates, and mixtures of same, comprises a length of material formed into a loop which is capable of being incorporated into a manual tool as in the Figure. The smoothing device with the necessary penetration adjustment is also capable of being applied to the substances as above by attachment to a machine. <IMAGE></p> |
