rotary shouldered connection meaning in English

旋转肩台连接

Threads on rotary shouldered connections for petroleum industry
石油钻杆接头螺纹
Petroleum equipment - thread gages for rotary shouldered connections
石油钻杆接头螺纹量规
Parametric design of threads on rotary shouldered connections for petroleum industry
石油钻杆接头螺纹参数化设计
Verification regulation of master gage for rotary shouldered connections thread , casing round thread and tubing thread
石油钻具接头螺纹套管圆螺纹和油管螺纹校对量规检定规程
Calibration specification for working gauge of rotary shouldered connections , round thread casing and tubing
石油钻具接头螺纹工作量规圆螺纹套管工作量规和油管螺纹工作量规校准规范