Based on the principle of model recognition, we can quickly and accurately identify the impedance charts of various defects on the surface of pump-rod.
利用计算机模式识别原理，快速、准确地识别出抽油杆表面多种缺陷的阻抗图。
2
It can simulate a human expert to make analysis and design scheme mainly for four kinds of typical engineering components-pressure vessels, huge rotation constructions, pump-rod and welded structures.
它可以模仿人类专家，对四种典型工程构件-压力容器、大型旋转构件，螺杆泵及焊接结构进行分析和设计。
3
Other possible reasons include problems with the oil pump, rod and main bearing clearances, camshaft stopping playing, or cam bearings and lifters.