The drill seizure cause during construction in Shanbei oil field oriented well is analyzed and puts forward preventatives for reference for the similar construction.
分析陕北油田定向井施工中发生卡钻事故的原因，提出预防措施，为雷同施工提供借镜。
This paper summarized the malfunction about freight car brake seizure in the running of the train, also found the reasons resulting in it, and put forward corresponding countermeasures.
总结了货物列车运行中车辆抱闸故障情况，从中找出故障原因，并针对这些问题提出相应的解决措施。
This paper summarized the malfunction about freight car brake seizure in the running of the train, also found the reasons resulting in it, and put forward corresponding countermeasures.
总结了货物列车运行中车辆抱闸故障情况，从中找出故障原因，并针对这些问题提出相应的解决措施。
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