To overcome the shortcomings of the shear pin type joint and left-hand thread type joint, a sliding sleeve subsurface safety joint is developed.
为了克服剪钉式和反扣式两种安全接头的不足，研制出一种滑套式井下安全接头。
The rotating shafts of three t type joint modules are parallel to each other and are mutually perpendicular to the rotating shafts of the I type joint modules at both ends.
三个T型关节模块的转轴互相平行，并与两端的I型关节模块的转轴互相垂直。
End Connections - choice of raised face smooth finish or ring type joint for piping flexibility.
连接端口-根据管道特点选择凸面光滑表面或环连接端口。
Clinical Output of the Rheumatoid Cervical Spine in Patients With Mutilating-Type Joint Involvement: For Better Activities of Daily Living and Longer Survival.
关节毁损型类风湿性颈椎病变的临床疗效：为取得更好的日常活动能力和更长的生存时间。
Clinical Output of the Rheumatoid Cervical Spine in Patients With Mutilating-Type Joint Involvement: For Better Activities of Daily Living and Longer Survival.
关节毁损型类风湿性颈椎病变的临床疗效：为取得更好的日常活动能力和更长的生存时间。
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