以下为句子列表：
英文: In this paper, the internal transverse cracks of continuous casting slabs of a niobium-bearing peritectic grade of steel are investigated using electron probe microanalyser and optical microscope.
中文: 摘要连铸坯厚度中心存在的内裂纹在后续的轧制过程中轧不合而对产品的质量带来重大的影响。
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