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简述开封空分集团研发配套河南能源化工集团龙宇煤化工55000 Nm~3/h空分装置用液体膨胀机的现场调试情况。
Briefing on the R & D of Kaifeng Air Separation Group for on-site commissioning of liquid expander for 55000 Nm ~ 3 / h air separation unit of Longyu Coal Chemical Company of Henan Energy Chemical Group.