| 摘要 |
The device comprises a modular support assembly (E) which may be fitted on a vehicle (V), the said assembly being capable of receiving elements (9), (17) which are suitably shaped to allow, depending on their positioning relative to the said assembly, the displacement by sliding on the ground of the said markers (B), under the effect of the concomitant displacement of the vehicle, corresponding either to a marker retrieving operation or to a marker depositing operation from a station (P) arranged on a part of the vehicle. <IMAGE> |
