• 北京航空材料研究院研究制造了我国第一铸型搅动工艺铸造真空

    The first domestic fine grain cast vacuum furnace on mold agitation process has been developed successfully by Beijing Institute of Aeronautical Materials.

    youdao

  • 北京航空材料研究院研究制造了我国第一铸型搅动工艺铸造真空

    The first domestic fine grain cast vacuum furnace on mold agitation process has been developed successfully by Beijing Institute of Aeronautical Materials.

    youdao

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