The results have shown that the brown alundum coatings are high-class neutral refractory coatings and are used with success in iron and steel cast-ings.
试验结,所研究
棕刚玉涂料是一种优质
中性抗粘
涂料,适用于粘土
、水
及树脂自硬
铸型和型芯.
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