支架两侧的延伸杆上分别活动连接有活动托板，活动托板连接冲积汽缸。
Extension rods at two sides of the support are respectively and movably connected with a movable supporting plate that is connected with an alluvial cylinder.
支架两侧的延伸杆上分别活动连接有活动托板，活动托板连接冲积汽缸。
Extension rods at two sides of the support are respectively and movably connected with a movable supporting plate that is connected with an alluvial cylinder.
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