| 摘要 |
A chair, in particular a chair for office use, including: a base support (14); a seat-supporting structure (16) mounted in an oscillating way with respect to the base support (14); and a seat (18), mounted so that it can slide in the longitudinal direction on the seat-supporting structure (16). The seat (18) and the seat-supporting structure (16) are provided with arrest structures (42, 46, 50) defining a plurality of clamping positions for clamping the seat.
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