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.
试验结果,所研究棕刚玉涂料是一种优质中性抗粘砂涂料,适用于粘土砂、砂及树脂自硬砂铸型和型芯.
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