In the first part, it is mainly introduced the function which the mandril detection system should have, the theory of detecting, constitutes and work process of the system.
第一部分简述顶杆检测的原理，介绍系统的组成情况和工作过程，最后分析了系统设计中的关键技术。
In the first part, it is mainly introduced the function which the mandril detection system should have, the theory of detecting, constitutes and work process of the system.
第一部分简述顶杆检测的原理，介绍系统的组成情况和工作过程，最后分析了系统设计中的关键技术。
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