... 高聚物与大分子晶体结构 crystal structure of high polymer and macromolecule 高靠背 high back 高可靠性筛选 high reliability screening ...
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高靠背可更好地支撑颈部。
专家建议“积极坐姿”。不管健身球还是凳子，只要没有高靠背就好。
Some experts on sitting recommend "active sitting" using an exercise ball, kneeling stool or something else without a high back.
电镀车架，带坐便，高靠背半躺(可调节45度)，固定脚架，可折叠。
CP frame, with pedestal pan, high backrest half bed (can adjust 45 degrees), stationary foot pedal, folding.
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