| 摘要 |
<p>The pig comprises: guide means (5); sealing means (7); at least one outer odometric sensor (10); acceleration-measuring sensors (Ax, Ay, Az) and gyroscopic sensors (G1, G2) incorporated into a core piece (16) protected in a barrel (11) mounted rotatably about its axis coaxial with the axis of the pig; and data-processing means (17). <IMAGE></p> |
