• Using investment casting technology and the colophony prototype of the glass an electric spark machining electrode was made for machining glass mould.

    利用模铸造技术树脂原型制作模具电火花加工电极

    youdao

  • Using investment casting technology and the colophony prototype of the glass an electric spark machining electrode was made for machining glass mould.

    利用模铸造技术树脂原型制作模具电火花加工电极

    youdao

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