分析结果表明，不同布孔方案的射孔套管的剩余强度是不同的。
The result of analysis indicates that the remaining strength of perforating casing with different scheme for holding is different.
更糟糕的是，与所有的小空调通风孔实际套管的噪声放大。
To make matters worse, the actual casing with all the little air vent holes amplifies the noise.
椎间盘壁的缺损处用激光或射频探头处理。检查椎间孔和神经，确认减压充分。去除工具和工作套管。
The disc wall defect is treated with a laser and radiofrequency probe. The foramen and nerves are inspected to confirm successful decompression. The instruments and sleeve are removed.
最后，通过对几种布孔方案进行对比分析，找出了射孔套管的优选布孔方案。
Optimized scheme for holding perforation is identified by comparing different schemes for holding perforation.
文章利用ANSYS有限元分析软件，对螺旋布孔射孔套管的承载能力进行了分析。
The sustainability of perforating casing with screw holding is analysed by using the finite element software ANSYS.
本文介绍的采用套管钻进和潜孔锤钻进相结合的复合性钻进工艺，有效地解决了在卵砾石层中钻进的难题。
Difficulties are encountered in drilling in boulder formation are efficiently eliminated by using of a combined drilling technique which combines casing drilling with DTH drilling method.
采用组合钻具进行跟管钻进，通过随钻跟入的套管保护孔壁，解决因钻孔垮塌导致钻探效率和岩心采取率低等技术难题。
The problems of low drilling efficiency and low core recovery due to borehole collapse were solved with pulling in casing while drilling through using combined BHA with casing.
建立了射孔段套管弹性抗挤性能分析控制一般方程，并采用摄动理论给出了的孔段套管弹性抗挤能力降低系数一般计算公式。
This paper gives the elastic differential equation of collapse of perforated casing, and a general formula for reduction factor of elastic collapsing by perturbation method.
提高绳索取心钻进效率要做到：一是根据孔深、钻孔孔径、钻孔所遇地层及其岩性的完整程度、构造特点、风化带发育深度等选择套管的直径及下入深度；
To raise wire-line drilling efficiency need to: 1. Select casing diameter and depth according to drilling depth, diameter, strata drilled and rock integrity, structure features, weathered layer depth;
摘要：针对分布反馈式(DFB)光纤激光器用于水声探测时频响曲线起伏较大的问题，设计了一种开孔套管式封装结构。
Abstract: To reduce the fluctuation of frequency response of a Distributed Feedback (DFB) fiber laser used in underwater sound detection, an encapsulated structure with orifices was designed.
固定螺钉完全旋入螺杆中心孔后，固定螺钉的上端面低于固定套管的上端面。
After the fixing bolt is completely screwed in the central hole of the screw, the upper end-face of the fixing bolt is lower than the upper end-face of the fixing sleeve pipe.
固定螺钉完全旋入螺杆中心孔后，固定螺钉的上端面低于固定套管的上端面。
After the fixing bolt is completely screwed in the central hole of the screw, the upper end-face of the fixing bolt is lower than the upper end-face of the fixing sleeve pipe.
应用推荐