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.
本文在综合考虑传热性能和摩擦阻力等因素的基础上，对单螺旋槽套管式冷凝器的结构进行了优化和研究。
On the base of both consideration of heat transfer performance and resistance, the optimization and research are carried out on single spiral duct double pipe condenser.
API套管圆螺纹自身存在牙间间隙，并形成螺旋状空间间隙带。
There exists a spiral clearance space in the API round thread casing joint which is effected by the thread tolerance ranges.
此为专业控制线之套管，品种涵盖螺旋软管、直丝软管、双丝软管。
It is mainly used as an outer tube for inner control cable. Types of product include coiling outer casing, long-lay outer casing, and double-wire outer casing.
提供了一种既能保证套管居中，又能产生水泥浆环空螺旋流的套管弹性旋流扶正器。
A kind of device which can keep the casing at the center of borehole and can also generate helical flow of cement slurry, which is the Spring Whirlflow casing Centralizer, is presented in this paper.
介绍了一种双面换热的套管式直流蒸汽发生器，其元件由直管外管和螺旋内管组成。
The once-through steam generator with double-side heat transfer component was presented in this paper. And the component is composed of straight tube outside and helix tube inside.
采用自行设计的套管传热实验装置及流程，进行了内置螺旋弹簧换热管的换热性能实验研究。
The heat exchange performance of the built-in spiral spring heat exchange tube is investigated in the lab by using the self-designed experimental device and flow.
采用自行设计的套管传热实验装置及流程，进行了内置螺旋弹簧换热管的换热性能实验研究。
The heat exchange performance of the built-in spiral spring heat exchange tube is investigated in the lab by using the self-designed experimental device and flow.
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