nonmetallic inclusion in steel
nonmetallic inclusion in steel
钢中的非金属夹杂物
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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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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