其特征在于它包括定位体，电控透光的十字坐标板和定位珠；
The utility model is composed of a positioning body, an electric control translucidus cross coordinate board and a positioning ball;
胶线分别穿过两排定位管，连接靠背和坐垫的硬塑料通风管、木珠和弹性边框；
Rubber wire through these two rows of fixing tubes connects ventilating tube of chair back and cushion wooden beads and elastic frame.
胶线分别穿过两排定位管，连接靠背和坐垫的硬塑料通风管、木珠和弹性边框；
Rubber wire through these two rows of fixing tubes connects ventilating tube of chair back and cushion wooden beads and elastic frame.
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