失稳

The post-contingency load dynamic restoration is one of the direct reasons leading to mid-long term voltage instability or voltage collapse.

负荷在故障后的动态恢复特性是中长期电压失稳或电压崩溃的直接原因。

It couples the general limit equilibrium method and hydrological distribution model based on DEM, and can be used as a effective approach to predict the occurrence of landslide under different precipitation conditions as well as landslide mechanics research.

它将工程中广泛采用的滑坡极限平衡分析模型与基于DEM的水文分布模型有效地集成起来，旨在解决作为滑坡重要影响因素的降雨条件对滑坡发生、分布的影响机理及滑坡在不同降雨条件下的变形失稳定量预测的问题。

First, buckling collapse models were discussed, and the analysis on the stability of rock slope was carried out through rigid body limit equilibrium method and finite element method.

首先，对岩质边坡的失稳破坏的模式进行探讨，用刚体极限平衡法和有限单元法对岩质边坡进行稳定性分析。

It is very practical for geotechnical engineering design.Fundamentals of the limit state finite element method are discussed in this paper,such as the definition of safety factor and the selection of yield criteria.Through a series of case studies,the applicability of the proposed method is demonstrated.

本文探讨了极限分析有限元法的一些基本原理，包括安全系数的定义、岩土体整体失稳的判据、屈服准则的选用等，并将该方法应用于边坡、地基、隧道稳定性计算，算例表明了此法的可行性，拓宽了该方法的应用范围

By analyzing forces on a single tyre and adhesive performance on whole forklift,a relation of adhesive coefficients to sliding direction is set up,rub coefficients and adhesive limit are analyzed,a relation of multi-directional electrical forklift static stability to its adhesive performance is set up,a method judging un-stability of a multi-directional electrical forkl.

为了研究万向电动叉车的静态稳定性，通过对单只轮胎受力、整车附着性能进行分析，建立了附着系数与滑动方向间的关系，提出了用静态区域图判断万向电动叉车失稳的方法，得到了整车下滑坡度角随方向角变化的关系曲线。

Compliance steering operates only at certain lateral acceleration of vehicle. At low lateral acceleration, it doesn't work, the vehicle's performance is like the front wheel steering vehicle's; at high lateral acceleration, it can prevent the vehicle from losing its stability, which is caused by excess steering angle of the rear wheel, by the limiting position function of rubber mounting.

随动转向效应仅在特定的侧向加速度段起作用，在小侧向加速度段，随动转向不起作用，车辆性能与普通前轮转向车一样；而在很高侧向加速度段，它可以通过橡胶悬置的限位作用来确保车辆不致于因后轮转角过大而失稳。

According to the stress-strain complete process curve, the total volumetric strains and crack induced 1 volumetric strains is adopted as damage parameters for analyzing the five phases during the crack growth (crack closure , linear elastic, stable crack growth, unstable crack growth and post failure).

通过压缩试验获得的脆性岩石的全应力应变曲线，利用体积变量和裂纹体积变量等损伤变量分析得出裂纹发展的五个阶段即：压密、弹性、微裂纹稳定扩展、裂纹非稳定扩展和峰后失稳等。

The influence of initial displacement on load bearing capacity and critical load of steel concrete composite structure is discussed.

讨论了钢材的初始挠曲对钢混凝土连续组合梁的极限承载力与失稳屈曲临界荷载的影响。

The P-A effect caused by gravity load makes internal force and displacement of structure larger, even instable.

重力荷载引起的P-△效应使结构的内力和位移增加，甚至失稳。

Results］The average age and the rates of segmental instability, degenerative scoliosis, loss of lumbar lordosis in patients with lumbar stenosis and severe back pain were higher than those with lumbar stenosis and typical claudication.

结果］腰痛明显组的腰椎管狭窄症患者的平均年龄、腰椎节段性失稳率、腰椎前凸消失和退变性侧弯的比率高於间歇性跛行组的腰椎管狭窄症患者。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。