• Lustrous carbon is deemed as technical data for evaluation of coal-dust.

    煤粉光亮作为煤粉技术性能指标。

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  • R1 and R2 have high lustrous carbon productive ratio. R3 can relax the thermal expand in great extent.

    其中R1R2具有光亮生成R3减小型砂热膨胀

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  • The use of coal-dust with high lustrous carbon in molding sand can improve surface roughness of the castings.

    光亮煤粉用于型砂,降低铸件表面粗糙度值

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  • The use of coal-dust with high lustrous carbon in molding sand can improve surface roughness of the castings.

    光亮煤粉用于型砂,降低铸件表面粗糙度值

    youdao

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