lustrous_coal_有道手机词典

1.Lustrous carbon is deemed as technical data for evaluation of coal-dust.
煤粉光亮碳可作为煤粉的技术性能指标。
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2.The use of coal-dust with high lustrous carbon in molding sand can improve surface roughness of the castings.
光亮碳高的煤粉用于型砂，可降低铸件表面粗糙度值。
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