Four - pole with double distance, non - librations, speed can be adjusted unlimited.

四 导柱 双行程升降 、 无振动, 进出速度无级调节.

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Multifunctional Rotary Chair and Electromotive Four - pole Swing applied to vestibular functional test of astronauts are introduced.

文章介绍了用于航天员前庭功能测试的多功能转椅和四柱电动秋千.

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