Causes for safety accidents were analysed, with summary on the method for its correct use and key points and evaluation analysis for the uncertainty of site voltage measurement.
分析了其安全事故发生的原因，总结了对其正确使用的方法和要点，并对现场电压测量的不确定度进行了评定分析。
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。
Through analysis of the field scale samples in Wuqi oilfield by X-ray diffraction method, scaling causes and scale control measures are studied in downhole and gathering system.
采用X -射线衍射方法分析了吴旗油田现场垢样成分，进而研究了吴旗油田井下及集输系统结垢原因和防垢措施。
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