rod end mounting hole 活塞杆端安装孔
The enlarged end of the lower rod sleeve is formed with at least one through hole facing to the porous piece.
中下杆套筒扩大结束形成至少在面向一块多孔洞之一。
The control rod is inserted into the containing via hole from top to bottom, and the lower end of the control rod supports against on the fusible body.
该控制杆，它从上往下插接进该容置通孔，而且，它下端抵靠在可熔体上。
The entire door type scaffold is characterized in that the connecting bar and the upright rod are welded together through a welding hole on the upper end of the upright rod;
它包括立杆、连接棒、安 全销，其特征：通过立杆上端的焊接孔，将连接棒和立杆焊接在一起；
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