The last two factors induce borehole instability both by affecting stress distribution around wellbore and material properties of rock.
但后两者都是影响井壁应力分布和岩石力学性能而造成井壁不稳定。
Considering the judgment of dynamic instability of truss structures, a stress rate method for dynamic instability analysis of truss structures was proposed.
针对结构动力失稳的判定问题，提出了一种适用于杆系结构动力稳定分析的应力变化率法。
Objective To discuss the significance of stress roentgenogram on diagnosis of chronic instability of lateral ankle and. bring forward the radiology diagnosis criteria.
目的探讨应力位片在慢性外踝关节不稳定诊断中的意义，提出影像学的定量诊断方法。
Objective To discuss the significance of anterior drawer stress radiograph in diagnosing of chronic instability of lateral ankle and bring forward the radiology diagnosis criteria.
目的探讨前抽屉试验应力位片在慢性外踝关节不稳定诊断中的意义，提出影像学的定量诊断方法。
Further determination of the elastoplastic instability point is facilitated by the compressional stress strain relation, which then gives rise of the final formula of the compressive strength.
结合压缩应力应变关系可进一步确定弹塑性失稳点的位置，从而导出压缩强度的理论公式。
In the experiments, a small-amplitude sine wave of displacement is modulated to shear loading to study the effects of shear stress perturbation on stick-slip instability.
实验中通过在剪切方向上叠加正弦波状的位移扰动，研究了剪应力扰动对断层粘滑失稳的影响。
Based on the critical condition of instability, an equation of system stress dropping is deduced.
根据系统失稳临界条件，导出系统应力跌落量的表达式。
Conclusion Anterior drawer stress radiograph has significant meaning to the diagnosis of chronic ankle instability.
结论前抽屉试验应力位片对于慢性外踝关节不稳诊断具有重要意义。
By analyzing the real stress - strain curve with theory of plastic instability and using this testing method, another form of the forming limit diagram has been found.
在利用共稳理论对实际应力应变曲线进行分析的同时，得出了求作板材成形极限图的新方法。
If sandpits are near bridge location, its evolution when subject to suitable shear stress of the flow will rapidly cause the bridge foundation instability.
采沙坑距大桥较近时，在水流剪应力作用下沙坑演变可很快造成大桥基础变浅，影响大桥的正常安全运用。
Using the LFEM theory, the author provided the computing method of stress strength factor of crack and the criteria of crack instability propagation and propagation angle.
本文根据砂岩储层的物理力学特征，运用断裂力学理论，给出了储层裂缝的应力强度因子的计算方法，定量地分析了开发过程中储层裂缝失稳扩展的判据、裂纹扩展方向。
Non-Newtonian fluid viscosity in the formation of a shear rate of change with variable, stress response reflected in the instability shown by different characteristics of Newtonian flow.
非牛顿流体在地层中的粘度是一个随剪切速率变化而改变的非常数，反映在不稳定压力响应特性上表现出与牛顿流大不相同的特征。
When the stress of wellbore is close to critical loads, wellbore is in the state of instability, and when dynamic disturbance is present, wellbore will collapse because of in…
提出当井壁孔隙压力接近临界值时，井壁处于非稳定平衡状态，在有动力扰动的情况下，井壁因失稳而坍塌。
When the stress of wellbore is close to critical loads, wellbore is in the state of instability, and when dynamic disturbance is present, wellbore will collapse because of in…
提出当井壁孔隙压力接近临界值时，井壁处于非稳定平衡状态，在有动力扰动的情况下，井壁因失稳而坍塌。
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