查询词典 proof stress

A+bx+cy , X=0, Y=0 It satisfies the compatibility equation 4 φ=0 find the stress components by σx=2φ/y2=0 σy= 2φ/x2=0 τxy=-2φ/xy=0 find the surface force components bys=X=0s =Y=0 σστ a linear stress function corresponds to the case of no surface forces and no stress .

a+bx+cy ， X=0 Y=0 满足相容方程 4 φ=0 由下式求出应力分量σx=2φ/y2=0 σy= 2φ/x2=0 τxy=-2φ/xy=0 由下式对给定坐标的物体求出面力分量s=X=0s =Y=0 σστ确定所设定的φ能解决的问题为：任意物体无确定所设定的能解决的问题为：体力，无面力，无应力。

Combining the actual rockburst status after excavation, based on the previous research data in the earlier stage, the character of the tectonic stress in Cangling Tunnel is studied. Finite element method is adopted to simulate the site excavation steps. At the same time, the tectonic stress is changed on the boundary of the model to simulate the actual rockburst areas; and the most proximal area's value is adopted to decide the section tectonic stress. Then, other sections' values are revised.

从苍岭隧道的构造应力场特征入手，结合现场开挖后岩爆实际发生状况，在前期研究资料的基础上，利用有限元计算分析，模拟现场实际施工步骤的同时不断改变模型边界上的构造应力来拟合实际岩爆区，以最接近实际破坏范围的计算结果界定区段构造应力值，据此对隧道各区段的构造应力进行修正。

The results show that space finite analysis results are close to test ones, bottom chords suffer axial force and large in-plane bending, and the max stress is nearby each middle internode. The max stress of node crossbeams occurs in No.2 bottom flange, and that of internode crossbeams happens in ones lying in the middle of every internode. The concrete slab is in tension at the longitudinal direction, and also suffers bent at vertical loads. The degree of completely-composite model taking part in the combined actions is about 55%, while that of semi-composite model is 42%-43%. The combination of concrete slab and bottom chord increases the degree of floor system taking part in the combined actions, lightens the burden of bottom chord, and reduces out-of-plane bending of node crossbeams especially the ones near bridgehead. Stress and displacement of main truss can be evaluated by a equivalent plane rigid frame in preliminary design, and effective stiffness of bottom chords are composed of original ones and concrete slab, and the concentrated load from deck can be translated into uniform load.

研究结果表明：空间有限元分析结果与试验结果较吻合；下弦杆受到轴向拉力和较大的面内弯矩作用，各节间最大应力出现在节间中点附近；节点横梁最大应力发生在横梁2的下翼缘，节间横梁最大应力发生在位于端节间中部的小横梁上；混凝土板顺桥向整体受拉，并在竖向集中荷载作用下产生弯曲变形；全结合模型大部分节间内的桥面板参与主桁共同作用的程度为55%左右，半结合模型桥面板的参与程度为42%~43%；桥面板与下弦杆结合能够增加桥面板的参与程度，减轻下弦杆荷载，减少节点横梁尤其是靠近桥头横梁的面外弯曲；对桥梁进行初步设计时，主桁杆件的位移与内力可按照1个等效的平面刚架计算，下弦杆的等效刚度由原下弦杆截面和混凝土桥面板截面组合而成，桥面荷载可转化为均布荷载施加。

With the prolongation of the time of Pb and Cd stress, the chlorophyll content of the clones and families were induced to first increase and later decrease, except that NEF14 and NEF12 were downtrend at all times. With the increasing of Pb and Cd concentration the chlorophyll content decreased fastly in the latter stress period. The downtrends of NE60 and NEF14 which were stress-resistence were small.

随胁迫时间的延长，杂交鹅掌楸无性系和家系(但NEF14和NEF12一直呈下降趋势)的叶绿素含量先升后降，随着Pb、Cd处理浓度增大，在胁迫后期叶绿素含量下降越明显，抗性较强的NE60无性系、NEF14家系降幅较小。

"People are particularly stressed out right now, and often emotional stress turns to physical stress, which turns to worse posture, which turns to pain, which turns to more stress," says Wendy Young, a certified ergonomist in Houston and author of the e-book, getinsideyourcomfortzone.com.

Wendy Young是一位工作学学者，他说，现在的人们压力太大了，心理压力经常转化为生理上的压力，这会导致人们采用更糟糕的工作姿势，进而引起疼痛，又转化为更大的压力。

People are particularly stressed out right now, and often emotional stress turns to physical stress, which turns to worse posture, which turns to pain, which turns to more stress, says Wendy Young, a certified ergonomist in Houston and author of the e-book, getinsideyourcomfortzone.com.

Wendy Young是一位工作学学者，他说，&现在的人们压力太大了，心理压力经常转化为生理上的压力，这会导致人们采用更糟糕的工作姿势，进而引起疼痛，又转化为更大的压力。&上一篇：有多少人上班的时候做私事？

People are particularly stressed out right now, and often emotional stress turns to physical stress, which turns to worse posture, which turns to pain, which turns to more stress, says Wendy Young, a certified ergonomist in Houston and author of the e-book, getinsideyourcomfort

Wendy Young是一位工作学学者，他说，&现在的人们压力太大了，心理压力经常转化为生理上的压力，这会导致人们采用更糟糕的工作姿势，进而引起疼痛，又转化为更大的压力。&

People are particularly stressed out right now, and often emotional stress turns to physical stress, which turns to worse posture, which turns to pain, which turns to more stress, says Wendy Young, a certified ergonomist in Houston and author of the e-book, getinsideyourcomfortzone.com.

Wendy Young是一位工作学学者，他说，&现在的人们压力太大了，心理压力经常转化为生理上的压力，这会导致人们采用更糟糕的工作姿势，进而引起疼痛，又转化为更大的压力。&上一篇：双语阅读：有多少人上班的时候做私事？

People are particularly stressed out right now, and often emotional stress turns to physical stress, which turns to worse posture, which turns to pain, which turns to more stress, says Wendy Young, a certified ergonomist in Houston and author of the e-book, getinsideyourcomfortzone.com.

Wendy Young是一位工作学学者，他说，&现在的人们压力太大了，心理压力经常转化为生理上的压力，这会导致人们采用更糟糕的工作姿势，进而引起疼痛，又转化为更大的压力。&每个人，每个地方都有故事在发生。

People are particularly stressed out right now, and often emotional stress turns to physical stress, which turns to worse posture, which turns to pain, which turns to more stress, says Wendy Young, a certified ergonomist in Houston and author of the e-book, getinsideyourcomfortzone.com.

Wendy Young是一位工作学学者，他说，&现在的人们压力太大了，心理压力经常转化为生理上的压力，这会导致人们采用更糟糕的工作姿势，进而引起疼痛，又转化为更大的压力。&此文章由小虹提供，佳禾外语进行整理。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。