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  • Selection methods for vacuum pump system
    Selection methods for vacuum pump system The Vacuum pump function is that pumping the gas out of the chamber,reduce the gas pressure inside of the vacuum chamber to achieve the required vacuum . Genera...

  • Vacuum Winter Maintenance
    Vacuum Winter Maintenance      1. Do not use the next few cold environment.      May be an appropriate warm-up prior to 2..      3. Join the ...

  • Heat treatment on metals (2)
    Heat treatment on metals (2)     nnealing Main article:Annealing (metallurgy) Annealing is atechnique used to recover cold work and relax stresses within a metal.Anneal...

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