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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

At the present, processing pipe end slope-mouth with the original method is still poor quality, high costs, lower speed, inefficient, great labor intensive and control quality difficultly.

针对目前加工钢管坡口方法的质量差、成本高、效率低、劳动强度大、质量难以控制等问题,设计了一种钢管管端坡口自动加工组合机床。