| 摘要 |
A back cushion assembly for a chair, including a back cushion portion on which is mounted a central, longitudinally disposed spine support cushion. A transversal lumbar support cushion is adjustably mounted on the back cushion portion in a position below the longitudinally disposed spine support cushion, for selective adjustment, up and down longitudinally of the back cushion portion, and toward and away from the back cushion portion.
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