The outer surface of the guide post is in a wavy shape matched with the arc-shaped inner concave head form top to bottom.
导柱外表面自上而下呈与弧形内凸头配合的波浪状。
The guide post and the post hole are distributed on the circumference of the outer lid and the inner lid.
所述导向柱与柱孔分布在外盖与内盖的圆周上。
The guide post and the post hole are distributed on the circumference of the outer lid and the inner lid.
所述导向柱与柱孔分布在外盖与内盖的圆周上。
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