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本文着重阐述了 ２ＸＧ－４型干式真空泵研制的重大意义、泵的结构设计、旋片及密 封等材料的选用上所做的研究和试验工作，并以理想的测试结果证实了该泵设计的新颖 性和合理性。
This article focuses on the development of the 2XG-4 dry-type vacuum pump, the significance of the pump structure design, rotary and sealing materials on the selection of the research done and test work done, and the ideal test results confirm the design of the pump Novelty and rationality.