Vacuum vessel seal structure used in the leak test of a liquid rocket engine turbopump is discussed.

 
  • 论述了某型号液体火箭发动机涡轮泵高压低温静密封检漏试验用真空室密封结构的设计问题。
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  • 深远海浮式风电平台 - deep-sea floating wind power platform
  • 京雄高速公路 - Beijing-Xiongan expressway
  • 农业及相关产业增加值 - the added value of agriculture and related industries
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