The progress in control technology of carbon, nitrogen, total oxygen, phosphorus, sulphur as well as inclusions in steel is discussed at Baosteel.

重点叙述了宝钢在钢中碳、氮、氧、磷、硫以及夹杂物控制方面的技术进步。

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The results show that these cracks are caused by the inclusions of rare earth sulphur oxides and alumina distributing in mass in base steel for hot rolled wide strips.

结果表明：管坯裂纹是因热轧宽钢带基材中存在大量聚集分布的稀土硫氧化物和氧化铝夹杂所致。

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The morphology of sulphide inclusions in sulphur-comprising micro alloyed steel manufactured by converter after rolling was observed.

用金相显微镜、扫描电镜和能谱观察和分析了转炉生产的含硫非调质钢轧后硫化物夹杂的形貌。

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Professor Sisson determined that the steel was attacked by a liquid slag which contained iron, sulphur and oxygen.

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