| 摘要 |
A mattress to support a human body (18) comprises a portion (60) having two lying surfaces (51, 52) substantially parallel to each other, which define a resting plane (r), on which the human body (18) rests, and in which the lying surfaces (51, 52) comprise a convex part (28, 31) which extends in height with respect to the resting plane (r).
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