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  • Vacuum Terminology
    Vacuum Terminology 1. Vacuum definition Vacuum system which is less than the region's rare book atmospheric gas state. 2. Vacuum degree The extent of the gas in the vacuum state rare book, usua...

  • Vacuum coating equipments’ chamber welding technology standards
    Stainless steel ultra high vacuum coating equipments ' vacuum chamber welding and designing standard: 1, To reduce the weld seam and weld length on the surface of vacuum chamber as much as possible. ...

  • Heat treatment on metals (1)
    Heat treatement on metals   Heat treatment is a method used to alter the physical, and sometimes chemicalproperties of a material. The most common application is metallurgical. Heattreatments a...

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