The machine adopts gear, rack type design, adjust the auxiliary support platform height, really fast.
本机采用齿轮、齿条式设计，调整辅助撑台高度，快速确实。
The rack moves a chin support member, which raises and lowers a chin piece.
齿条移动下颚支撑件，其升高和降低下颚部。
The rack moves a chin support member, which raises and lowers a chin piece.
齿条移动下颚支撑件，其升高和降低下颚部。
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