pin bearing

The developed drill pipe valve used in gas drilling is made up of nipple, cushion, sealing parts, valve seat, pin bearing, cylindrical torsion spring and valve plate.

气体钻井过程中，常规的配套工具无法满足工艺要求，为此而研制的气体钻井用钻杆阀由钻杆阀短节、缓冲垫、密封部件、阀座、销轴、圆柱扭簧和阀板等组成。

Reducer, crank pin bearing so small and no reverse impact load that reducer tooth broken, crank pin fracture will not happen.

减速机、曲柄销受力小，无反向冲击负荷，减速机打齿、曲柄销折断的故障不会发生。

Tripoli's ambassador, Ali Abdalla Awidan, arrived at AU headquarters Monday wearing a broad smile and a pin bearing the insignia of the rebel Transitional National Council.

利比亚大使阿里。阿布达拉。阿维丹星期一抵达非洲联盟总部，他脸上带着开朗的笑容，身上别着反对派全国过渡委员会的徽章。