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失稳类型
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  types of instability
     The necessary concept of stability analysis of largespan steel structure is reviewed. From a design point of view,the characteristics of all types of instability are interpreted.
     对大跨钢结构稳定分析必备的稳定概念进行了简单评述,从设计的角度解释了各类失稳破坏的特点,指出了典型结构的失稳类型;
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  instability patterns
     Thermal-thaw sliding collapse is a typical example. The following researches have been carried out in this paper, including slope instability patterns analysis in permafrost region of Qinghai-Tibet Platean, geological structure analysis for typical permafrost slope, model experiment of thermal-thaw sliding collapse of Qinghai-Tibet milestone K3035, stability analysis method, in-situ monitoring and numerical simulation of temperature field, displacement field.
     本文从青藏高原多年冻土区冻土斜坡失稳类型分析、典型冻土斜坡地质结构分析入手,通过对青藏公路K3035里程典型斜坡热融滑塌模型试验研究、稳定性分析、现场监测、温度场和变形场数值分析,开展了青藏高原多年冻土区斜坡稳定性研究,取得了如下成果:
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  instability type
     First introduces the instability type of portal frames and educe the curt formula under each instability conditions with traditional computing methods.
     首先介绍了刚架失稳类型,并用传统的计算方法得出刚架发生各失稳模式时的简略计算公式,从公式中判断出影响刚架平面内稳定的因素。
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     Research on curves of determining the instability type of broken rock blocks of main roof
     采场老顶断裂岩块失稳类型判断曲线讨论
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     Joint stiffness is one of the key factors influence on structural limited capacity, and is considered differently according to the structure system and instability type.
     节点刚度是影响结构极限承载力的主要因素之一,但要区分对待不同的结构体系和失稳类型
短句来源
     It is given the correct determining curve of instability type for broken rock blocks of main roof, and the errors on the determining curves in foretime literature is rectified.
     给出了正确的老顶断裂岩块失稳类型判断曲线 ,从而纠正了已往文献中的差错
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     Applying the linear airfoil theory and treating the air flow as two-dimensional ideal potential flow, the characteristic equation of membrane vibration is deduced by simulating membrane figure with traveling wave. Then instability type and phase of membrane is investigated.
     首先利用线性薄型机翼理论,将空气假定为二维的理想势流,用行波模拟薄膜振动形态推导了薄膜振动的特征方程,从而讨论了薄膜的失稳类型和失稳阶段。
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  “失稳类型”译为未确定词的双语例句
     5. By the method and program of this research paper, the buffeting analysis of Hang Zhou bay bridge
     7、采用修正的增量与内外两重迭代方法和时程分析方法,进行了大跨度斜拉桥非线性静风稳定性分析,界定了斜拉桥静风失稳类型,讨论了斜拉桥静风失稳形态、机理以及抖振响应与静风稳定性相互影响的问题。
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     The paper discusses the stability factors, the instability types and the stability estimating method of slope in cold region, and discusses that the freezing-thawing circulation has effect on rock slope and soil slope.
     本文对寒区边坡的稳定性影响因素、失稳类型和稳定性评价方法进行了探讨。
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     The collapses can be divided into two types with continuous slip surface and without continuous slip surface, and 10 sub types.
     贵州的岩溶边坡失稳归纳起来可分为两大类(具有连续滑面和没有连续性滑面的失稳类型)10小类。
短句来源
     The load-deflection curve of pole under wind load is solved based on the non-linear analysis. Then the ultimate capacity of the pole and the type of the instability are determined.
     获得了单管塔在风载作用下的荷载-位移曲线、极限承载力、失稳类型判定方法等,对同类工程的分析具有一定的参考意义。
短句来源
     The paper analyses sidewall stress state and sidewall unstable type,and combines with log data and indoor experimental result of core. Through analysis and calculation,the method of calculating slough formation pressure is proposed. By application of the method in 3 wells in Yancheng area,result shows that slough pressure section fits in with field practical condition.
     针对钻井中井壁失稳问题开展井壁稳定性研究 ,文中就井壁应力状态和失稳类型进行分析计算 ,并结合测井资料和岩心的室内实验结果进行分析 ,建立了一套计算地层坍塌压力的方法 ,结合盐城地区 3口井应用对比 ,坍塌压力剖面基本吻合现场实际 ,为钻井液密度设计提供了一定的依据
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  types of instability
There are several types of instability and they can develop simultaneously.
      
Types of instability in convective flows of a binary mixture with concentration heat sources
      
Parametric resonance is one of the common types of instability of mechanical systems [1].
      
The interaction of Rayleigh and non-Rayleigh types of instability is investigated.
      
The conditions of establishment and the nature of the evolution of the two main types of instability of these systems are analyzed.
      
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  instability patterns
Radiology of trauma to the wrist: Dislocations, fracture dislocations, and instability patterns
      
Finally, the various posttraumatic instability patterns of the wrist are discussed.
      
This review addresses the pathoanatomical basics as well as the clinical and radiological presentation of instability patterns of the wrist.
      
Climatic Variations In The Moisture and Instability Patterns Of The Atmospheric Boundary Layer On The East Mediterranean Coastal
      
The governing equation is formulated as a fourth-order eigenvalue problem with non-constant coefficients and then a complex WKB technique is employed to yield the localised instability patterns.
      
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  instability type
It is shown that the number of regimes which lose stability, the instability type, the number of convective rollers developed, and the heat transfer depend significantly on the vessel geometry.
      
Results: Alterations of microsatellite were classified into microsatellite instability type I, type II and loss of heterozygosity (LOH).
      
Different types of instability differ clearly in their precursors, and the instability type is closely related with the geometrical texture and the deformation stage of the fault system.
      
The last makes it possible to study the physical instability correctly and, in particular, to determine the instability type.
      
In the present article, an attempt is undertaken to account for the production of shear instability type structures and structures that arise as the beam dimensions in the feedback loop are varied.
      
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Discussed in this article are mainly elementory rules and influence factors of the unstable hillslopc in the south mountain land of Anhui Province. The unstable classification system for the hillslope of the rock mass and the whole instable process has been divided into distinct progressive steps. Because the change of the stability has taken, place under the influence of various factors, a new engineering geological analysis method of the unstable hillslop is suggested, At the end of this paper.

本文探讨了皖南山区层状岩体边坡失稳的基本规律及影响因素。分析了失稳类型和失稳过程中的不同发展阶段的划分。由於边坡稳定性改变可受多种因素的影响,故本文最后提出了新的边坡失稳的工程地质分析法。

The experimental researches on creep-failure of quartzite and granite, taking place at the middle-lower crustal conditions, show that semi-brittle creep-failure of crustal rocks, resulted either from fracture or from flow, could be of sudden or gradual instability modes. The transition of failure-instability modes of crustal rocks is strongly temperature, pressure and plastic component-dependent, which makes the semi-brittle failure of rocks much more complex.To identify such a complex deformation-failure process,...

The experimental researches on creep-failure of quartzite and granite, taking place at the middle-lower crustal conditions, show that semi-brittle creep-failure of crustal rocks, resulted either from fracture or from flow, could be of sudden or gradual instability modes. The transition of failure-instability modes of crustal rocks is strongly temperature, pressure and plastic component-dependent, which makes the semi-brittle failure of rocks much more complex.To identify such a complex deformation-failure process, it is the first thing to distinguish fracture, friction from flow, which are considered to be the basic failure modes of crustal rocks, and then the instability modes, sudden (caused by shear fracture or stick-slip) or gradual (caused by creep flow). It is obvious that the traditional strength criterion will not be able to predict these deformation events.On the basis of experimental results, the following conclusions have been drawn:1. The limited strength of middle-lower crustal rocks varies in some range, the upper limit is given from shear fracture strength of intact rocks, and the lower limitfrom frictional strength of rocks with saw-cut. In relatively deep part of the crust, the lower limit will be given from the limited flow stress, which can also be expressed as limited strain. Generally, fracture failure, which mainly occurs in upper-middle part of the crust, is limited-stress-dependent, and flow failure, which is more often observed in lower part of the crust, is limited-strain-dependent.2. Traditional strength criterion can only be used to identify the failure conditions and failure modes (fracture or flow), but can not reflect the instability modes. A new multicri-terion has been set up to identify the instability modes of rocks. An empirical criterion for this purpose has been given in form of critical stress or the plastic component.3. The semi-brittle failure mechanisms and the corresponding instability modes of crustal rocks can be classified by cal culating the critical stress and strength of rocks using the suggested multicriterion, and then a deformation-failure mechanism diagram can be drawn out, which directly reflects the relationship between environment (such as temperature and pressure) and rock failure-instability modes at relatively high stress, as well as the possible distribution of creep failure by different mechanisms.

本文通过分析地壳半脆性域岩石蠕变破坏-失稳的复杂性,提出应该建立能够判别地壳岩石半脆性蠕变破坏-失稳基本规律的准则,以便尽可能准确地预测地壳半脆性域岩石蠕变破坏-失稳的类型及其与温度压力等环境条件的关系。

In this paper,the authors studied the distributing characteristics of collapses and landslides during strong historic earthquakes in China and found that they are mainly distributed in regions with frequent strong earthquakes and complex topograph,especially in the South North Earthquake belt.Types and occurrence conditions of such earthquake disasters were analyzed.With reference to the data of collapses and landslides during modern earthquakes,the mechanism of slope's unstability was studied.

作者研究了我国历史地震时崩塌滑坡的分布规律。发现我国历史地震时引起的崩塌滑坡等山坡失稳地质灾害主要集中分布在强震多发、地形复杂的地带,其中尤以南北地震带上最为集中。还分析了不同地区地震引起的斜坡失稳的类型及其产生条件;结合现代地震中崩塌、滑坡的调查资料研究了山坡土体失稳的机制

 
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