滑动柱外侧纵向对应滑动块设有滑动槽；
The sliding-groove is equipped at vertical orientation of the outside of the sliding column.
安装车窗玻璃滑动槽和皮带防水饰条密封。
在支撑臂定位座的上壁顶口处对应支撑臂的滑动槽设置凸形滑动块；
The location slider of the support arm is cooperated to the sliding-groove of the sliding column to form to sliding mechanism.
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