| 摘要 |
<p>The invention concerns a device designed to be anchored in the ground of granular composition, comprising a rod with hollow tubular section, the latter having an open upper end wherein can be fixed an object and an intermediate orifice on its flank. The orifice enables evacuation of the granular matter constituting the ground and penetrating into the rod through its open lower end when the device is being anchored to the ground.</p> |
