According to the principle of four bar linkage mechanism, the new style thread inspecting stand for oil tubes is designed.
根据平面四连杆机构原理设计了新型石油套管螺纹检查台。
The special combined probe arrays inspecting the axial and circumferential defects were designed and were installed on a special stand.
将各组探头安装在探头架上，对带有人工缺陷的钻杆接头进行了检测。
The special combined probe arrays inspecting the axial and circumferential defects were designed and were installed on a special stand.
将各组探头安装在探头架上，对带有人工缺陷的钻杆接头进行了检测。
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