在逆止器的轴端孔内通过胀套和双平键与从 动轴连接；
The inner part of a shaft end hole of the backstop is connected with a driven shaft through an expansion bush and a double flat key;
贝尔凹陷布达特群地层裂缝—孔（洞）双介质储集特征明显，裂缝和次生孔洞是布达特群潜山储集层的重要储集类型和储集空间。
The fracture-hole double medium porosity mode develops distinctly in the research area, fracture and secondary bole-hole are the most important reservoir type and accumulating space for oil.
针对一种具有深孔的双杯形零件，对7a04铝合金复合冷挤压工艺进行了研究。
In this paper, the cold extrusion process of 7a04 aluminum alloy was developed for the production of a double-cup workpiece with a deep hole.
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