mould

A new technology for extending the end by mould is presented in this paper.

介绍了一种新的管端镦粗方法。

Design and Testing of Technological Process for End-upsetting of Oil Drill Pipe;

石油钻杆管端加厚工艺过程设计与试验

The design of non-dig drill pipe end-upsetting product line autocontrol system were introduced in this paper.

介绍了非开挖钻杆管端加厚生产线自动控制系统的设计。

The feasibility of evaluating the position of right-sided double-lumen endobronchial tubes by the changes of inspiratory peak airway pressure and cuff volume;

吸气峰压和套囊容量变化评估右双腔支气管导管管端位置的可行性