临界强度

This method overcome the problems of many supposition conditions in theory and difficulty in searching critical slip surface in 3D limiting equilibrium analysis; It uses the 3D FEM\'s stress field directly, differs from the practical value of 3D FEM strength reduction method used hypothesized load, and differs from the characteristic of the FEM with limiting equilibrium theory still to need to divide the columniation, and suppose the critical slip surface in advance.

该方法克服了三维极限平衡分析方法在理论上引入较多假设条件，且搜索临界滑裂面困难的问题；它直接采用三维有限元应力场，不同于三维有限元强度折减法基于虚拟荷载上得出的实用价值；同时异于沿用极限平衡理论的有限元法仍需要进行条柱划分，并事先假设滑裂面形状及位置的缺点。

The cyclic critical state and effective cyclic strength parameters can be defined from it.

据此可以定义动力临界状态及相应的有效动强度参数。

The factors evolve in a catastrophic and irreversible way when cross the critical point.

色谱边界的层次性由有关要素的感知反应强度决定，感知反应临界带不同宽度的分布及其组合确定了系统的演化方向和演化道路。

In order to study the fatigue of pressure vessel commonly encountered problem in engineering with large destructibility , based on the theory of fracture mechanics , the pressure vessel existing original crack was equivalent to the problem of infinite flat with center crack .

为了分析工程中常见的破坏性极大的压力容器疲劳问题，基于断裂力学理论将存在初始裂纹的压力容器等效为无穷远处作用均匀拉应力的含中心裂纹无限大板问题，解出表面半椭圆裂纹和穿透裂纹的应力强度因子；利用断裂判据得到裂纹的临界断裂尺寸；采用Paris表达式对裂纹扩展速率进行描述，推导出初始裂纹在不同裂纹尺寸和形式下的裂纹疲劳扩展寿命。

The fluorescence intensity of filtrating malignancy was 282, and the sensitivity and the specificity were 80% and 72%.

荧光强度282作为诊断恶性肿瘤的临界值，则其检测灵敏度和特异度分别为80%和72%。

The different levels in gradational boundary are determined by the sensitive and reactive intensity of the relative factors.

色谱边界的层次性由有关要素的感知反应强度决定，感知反应临界带不同宽度的分布及其组合确定了系统的演化方向和演化道路。

A formula of development intensity critical control based on road traffic factors is set.

并且建立起基于道路交通因素的开发强度临界控制的计算公式。

Through comparison-study on several plans, it is pointed out that different forecast data and measures may lead to different development intensity critical control plans.

通过多个方案对比研究，指出不同的预测数据和纠正措施将产生不同的项目开发强度临界控制方案。

In the striking distance factor model, randomicity of progression for up leader and down leader is ignored, and the critical striking electric intensity of lightning leader to phase conductor and ground are both decided to 500kV/m. This suppose is not proper.

击距系数模型忽略了上下行先导发展的实质，将先导对地与对导线的临界击穿强度均取为500kV/m，这种假设不合理。

Based on the result of different density under undrained condition, analysis the character of stress-strain, pore-water pressure and stress path, research the critical-state, strength of steady-state, pore-water coefficient and static liquescence of saturated loose sample, found the differentia of different density under different confining pressure.

在不同密实度土样CU试验结果基础上，分析了土样的应力-应变、孔隙水压力以及应力路径特征；对蒋家沟砾石土的临界状态、稳态强度、孔隙水压力系数以及松散土样的静态液化势进行了分析，得出了不同密实度土样在不同围压下的力学性状的差异。

Do not gum up the work by telling mother what we are going to do .

别告诉母亲我们要干的事，那会把事情搞糟的。

In recent years, application of the partial prestressed concrete beam s is developed.

近年来，随着部分预应力砼梁应用的推广，发现我国规范所采用的名义拉应力法的计算结果不稳定。