| 摘要 |
The installation comprises a first pair of rails having a first gauge (spacing), arranged coaxially inside a second pair of rails 2 having a second gauge (spacing), the pairs of rails being intended for guiding convoys consisting of trucks 3 each including a removable case 4 resting on a chassis 5. The installation includes devices 12 for lifting the cases 4, permitting withdrawal of the chassis 5 and their replacement by other chassis adapted to the other gauge (spacing) of rails and on which the cases may be placed. <IMAGE>
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