分析了原因，提出了从工艺着手降低加热长度变化率的方法，以及加热长度变化率的简易鉴定方法。
Based on analysis of the causes, method for reducing heated length variation as well as simplified identifying approach are proposed aiming at its technological process.
分析了原因，提出了从工艺着手降低加热长度变化率的方法，以及加热长度变化率的简易鉴定方法。
Based on analysis of the causes, method for reducing heated length variation as well as simplified identifying approach are proposed aiming at its technological process.
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