Porcelain enamel belongs to the inorganic nonmetallic material, it is one kind of compound materials, which was coated on the metal surface and burned under high temperature.
搪瓷材料属于无机非金属材料，它是一种深覆在金属表面的一层或多层玻璃质釉，在高温下烧制而成的金属与无机氧化物牢固结合的复合材料。
The results showed that the major cause of longitudinal surface cracking of 20 steel tube blanks was higher nonmetallic inclusion content in the steel than standard value.
结果表明：非金属夹杂物超标是导致管坯表面产生纵向裂纹的主要原因。
The results showed that the major cause of longitudinal surface cracking of 20 steel tube blanks was higher nonmetallic inclusion content in the steel than standard value.
结果表明：非金属夹杂物超标是导致管坯表面产生纵向裂纹的主要原因。
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