N a sign on a post by a road indicating directions 路牌; 路标
The device is applicable for mounting punches, for using dowel bushes combined with a guide post.
本发明的装置应用于安装冲头，应用于使用与导柱结合的导套。
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 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。
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