您要查找的是不是：
- A helical buckling of pumping rods has taken place in the course of downstroke of pumping. 认为抽油杆在下行冲程中可能因失稳而在有限空间内发生螺旋状弯曲。
- Based on the principle of minimum potential energy, the helical buckling of a drillstring is studied, with its top end free circumferentially and lower end hinged. 基于最小位能原理,研究了斜直井内钻柱的非线性螺旋屈曲问题。
- Analytic solution is established to describe axial force distribution of strings helical buckled in vertical wells when slack down from the top. 用解析法建立管柱下放时的轴向力表达式,得出轴向力极限值。
- Abstract: Analyfc solution is established to describe axial forcedistribution of strings helical buckled in vertical wells when slack down from the top. 文摘:用解析法建立管柱下放时的轴向力表达式，得出轴向力极限值。
- STUDY ON SEMI-STATIC LOADING MODEL FOR NONLINEAR HELICAL BUCKLING OF DRILL STRING IN STRAIGHT WELLS 直井中钻柱非线性螺旋屈曲准静态加载模型研究
- THE DEFINITION OF HELICAL BUCKLING CRITICAL LOAD OF TUBING IN STRAIGHT WELLS BASED ON THE FINITE ELEMENT ANALYSIS 基于有限元分析的直井中钻柱螺旋屈曲临界载荷定义
- Nonlinear Finite Element Analysis for Helical Buckling of Tubing in Deviated Wells 斜直井中钻柱螺旋屈曲的非线性有限元分析
- RELATIONSHIP BETWEEN THE AXIS CRITICAL FORCE AND THE SPEED OF THE DRILL STRING WITH HELICAL BUCKLING 钻柱螺旋屈曲时钻速与轴向力间的关系
- Numerical Verification of Quasi-Static Loading Model for Nonlinear Helical Buckling of Tubing in Constant-Curvature Wells 钻柱非线性螺旋屈曲准静态加载模型的数值验证
- She's really buckling down to her new job. 她埋头苦干做新工作。
- helical buckling 螺旋弯曲
- The helical spring can no longer be used. 盘簧不能再用了。
- This behavior is similar to buckling of strut. 这种状态类似于压杆的屈曲。
- Minimum of three inner wraps to prevent buckling. 最少三层内部包裹，有利于防止挠曲。
- The polynucleotide chain is helical. 多核苷酸键是螺旋形的。
- Buckling loads: Assigned the best buckling curve. 抗弯荷载:选定最佳的抗弯曲线。
- In the tests, local buckling was visually verified. 在这次测试中，局部弯曲被修正了。
- Influence of High Temperature on Strings Helical Buckled in Vertical Wells 高温对油管屈曲变形的影响
- The helical gear has become worked down over the years. 斜齿轮因为年久而磨损了。
- In no time at all they were buckling on their safety belts. 他们很快扣上安全带。
以上内容独家创作，受著作权保护，侵权必究
海词词典，十七年品牌
