The gluing mechanism of API round thread casing and tubing is analyzed.
分析了API圆螺纹油套管发生粘扣的基本过程及机理。
The taper and pitch diameter of API round thread casing are two of the most important parameters.
API圆螺纹的锥度和中径是两个重要的参数。
The taper and pitch diameter of API round thread casing are two of the most important parameters.
API圆螺纹的锥度和中径是两个重要的参数。
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