Either your chair must have some sort of lumbar support or a pillow or backrest achieves this.

你的椅子得有一个能支撑腰部的靠垫或者靠背什么的。

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In addition, some power seats have a lumbar adjustment that USES a small air pump to inflate a bag or bags on the lower back of the seat to serve as a pillow.

此外，还有一些电动座椅具有腰部位置的调整功能，即在椅背的下部有空气泵充气的袋子，用以像枕头一样的调整腰部位置。

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Objective to study the mechanics distributed law of the anterior longitudinal ligament and anterior vertebra in the thora-co-lumbar spine when using the pillow to treat flexion fracture.

目的研究垫枕治疗胸腰椎压缩骨折中胸腰椎椎体前缘和前纵韧带的力学分布状况。

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