对在生产过程中出现断裂的双级活塞推料离心机推杆 ，在理论分析和扫描电镜检验的基础上 ，提出了改进方案。
In this paper, the push rod in HR500 N Centrifuges fractures in productive are analysis and put forward an improve measure.
本机为L型、两列、两级、双作用、水冷、有十字头的固定式往复活塞空气压缩机。
This machine is of LV model, double-row, double-step, double function, water-cooling, and intercrossing, fixed, no basic reciprocating piston type air compressor.
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