叙述了180涡轮钻具用减速器的传动比，齿轮传动，端面机械密封和偏心短圆柱轴承的设计计算过程和有关处理办法。
The design calculation process and related process methods for transmission ratio, gear transmission, end mechanic sealing and eccentric short roller bearing used for 180 turbine drill are described.
在每一圆滑块的偏心圆孔的朝向其相邻圆滑块的端面周边均设置两个销孔，所述销孔为盲孔；
The axes coincide and the two ends of the locating pins are respectively inserted into the pin holes of the adjacent circular sliders.
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