| 摘要 |
<p>This invention relates to a public works machine constituted by a chassis, a jib articulated on said chassis, and a beam articulated on said jib about an axis, which is disposed in the median zone of said beam, whilst a first working tool is coupled with a first end of said beam, wherein a second working tool is coupled to the second end of the beam, and each of the first and second working tools may be placed in working position whilst being held coupled at its corresponding end to the beam.</p> |
