拉杆锁头通过销钉与钢结构上耳板连接，另一端连接其他结构件。
Lock is connected to lug on the steel structure by pin, the other end is connected to other structure parts.
提出抗冲切锚栓和销钉两种新型抗冲切元件，给出配置抗冲切元件时板柱节点的承载力计算公式；
Two component anchor bolt and dowel are Afforded, a formulas to calculate the punching capacity of this slab-column connection with the effect of punching component is given in the article.
rd 全自动钉销机用于印刷电路叠层板在印制电路板数控钻床钻孔前钻作基准定位销钉，从面保证印刷电路板数控钻床能加工出高品质的产品。
RD auto pinning machine is used to make reference positioning pin prior to drill the laminated plates of etched circuit ca rd on drill machine for etched circuit ca rd manufacture premium products.
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