以下为句子列表：
英文: The main causes which lead to tensile abnormal fracture of SWRH82B steel rods are the network cementite sod the big brittle inclusion.
中文: 摘要通过对SWRH82B盘条的拉伸断口进行分析，认为网状渗碳体和大颗粒脆性夹杂物等缺陷是引起断口异常的主要原因。
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英文: The results indicated that low graphite spheroidization rate and free cementite were the main causes of poor mechanical property.
中文: 试验结果表明，控制碳当量和球化剂加入量，采用瞬时孕育等可提高球化率；采用预热砂型等可减少渗碳体。
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