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A kind of multi-stage roots pump vacuum energy-saving system
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Multi-stage vacuum pump sharing drive shaft
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A kind of ultra-large type Roots vaccum pump end cap water spacer
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A kind of steel mill molten steel vacuum outgas dry type unit return-flow system
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One kind being applied to thermal power plant's condenser and vacuumizes energy-efficient integral vacuum pumping system
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A kind of vacuum system applied in steel industry molten steel vacuum degassing process
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Three-level-roots-water ring intelligent frequency converting control vacuum system and control method thereof
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A kind of three lip oil sealing sealing systems for Roots vaccum pump
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Magnetic sealing structure for drive end of roots pump
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Self-lubricating double sealing structure for drive end of roots pump
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Double-clip type vacuum jacket flange plate
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Vacuum system for vacuum degassing smelting furnace, and control method thereof
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Oil-gas separating device for discharge port of slide valve pump
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