• By a given moulding technique condition, the details of contents for producing asbestos-free calcium silicate board, the primary material for the fire duct, were discussed.

    研究了一种新型耐火风管制造方法,探讨了一定工艺条件下耐火风管主材-无石棉硅酸模压成型配方。

    youdao

  • By a given moulding technique condition, the details of contents for producing asbestos-free calcium silicate board, the primary material for the fire duct, were discussed.

    研究了一种新型耐火风管制造方法,探讨了一定工艺条件下耐火风管主材-无石棉硅酸模压成型配方。

    youdao

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