A positive displacement variable diameter stabilizer was developed in China, and its field tests and real drilling applications in Well QHD32 6 A26 was presented.
并介绍了国内自行研制的正排量变径稳定器在QHD 32 -6 - A 2 6井的现场试验和实钻应用情况。
Through the mechanical analysis of biomass materials, we designed a variable-diameter conical head with the open molding and verified our results using small wood shavings, sawdust and so on.
通过对生物质原料的力学分析，设计了开式成型的变径成型锥头。
A dual variable-diameter wheel pumping unit, which has long stroke and low pumping speed and large load capacity, is designed based on conventional beam pumping units.
双变径轮式抽油机是在继承常规游梁式抽油机优点的基础上设计而成的大载荷、长冲程、低冲次节能型抽油机。
In particular it optimizes the parameters of the extension spring that is a crucial part in such a flexible infinitely variable-diameter system.
特别是对超声检测柔性无级变径系统的重要部件拉伸弹簧进行了参数优化，对超声变径检测装置的设计具有重要指导意义。
In particular it optimizes the parameters of the extension spring that is a crucial part in such a flexible infinitely variable-diameter system.
特别是对超声检测柔性无级变径系统的重要部件拉伸弹簧进行了参数优化，对超声变径检测装置的设计具有重要指导意义。
应用推荐