| 摘要 |
A stiffening stay consisting of a flat elongate flexible plastic blade (1) having a central portion (10) with corrugations (11, 12) lying in the longitudinal plane thereof, and, at each end, straight end portions (2, 3) with rounded free ends (4, 5), the thickness E1 of the end portions (2, 3) being smaller than the thickness E2 of the central portion (10).
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