| 摘要 |
In a double passenger seat support arrangement for use in land, water or air transports which comprises a seat support frame with spaced support legs interconnected by a support beam structure having spaced sets of box spar and mounting track structures, each such set has at least two mounting track structures arranged side-by-side and firmly connected to, or integral with, the associated box spar structure with one of the mounting track structures defining a downwardly open channel for mounting the support beam structure onto the legs and the other having an upwardly open channel for mounting the seats onto the support beam structure.
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