查询词典 wind shear

Integrated analysis of 7 times heavy rain in Yunnan from July 19 to August 2 based on actual observation weather datum and satellite cloud atlas and Doppler radar image. The results show that: high-low southwest jet stream is important effect system. The maintenance of southwest jet stream provides water vapor, momentum, fast transfer of unstable energy for the lasting heavy rain. The further configuration of plateau shear line and southwest jet stream is necessarily condition about 7 times heavy rain. The lasting heavy rain appeared on big value region of 500hPa vapour flux and vapour flux divergence. The shear cloud band and subtropical high cloud band crossed and confluenced in Yunnan on the satellite cloud atlas. The maintenance and intensification of shear cloud hand and periphery cloud band of subtropical high correspond quite well to heavy rain falling region and cloud band distribution.

应用实测气象资料，结合卫星云图与多普勒雷达图像分析，对2007年7月19日到8月2日云南少有的7次强降水过程进行综合分析，结果表明：高低空的西南急流是重要的影响系统，西南急流的维持为持续性强降水过程提供了水汽、动量和不稳定能量的快速传递，高原切变线与西南急流的有利配置，是7次持续性强降水过程必不可少的条件；持续性强降水出现在500hPa水汽通量大值区和水汽通量散度辐合区；卫星云图上切变云带和副高外围云带在云南汇合，切变云带和副高外围云带维持、加强的过程与强降水落区的时空分布对应较好。

Based on the experimental research and the analysis of the experimental results for the shear strength of the brickworks of Yellow River Silt cellular bricks, the shear strength rule and shear destructive character of this new wall material are obtained.

本文通过对黄河淤泥多孔砖砌体抗剪强度的试验研究和对试验结果的分析，得出了黄河淤泥多孔砖这种新型墙体材料的抗剪强度规律及其抗剪破坏特征。

Through above numerical analysis of the TiN coating/substrate system, some typical rules about the fatigue failure are found:(1) the fatigue damage of a coating/substrate system appears first on the interface, then expands along the interface and to the substrate, and finally causes the coatings broken and spalled;(2) under the cyclic loadings of tangential sliding and radial extrusion, the equivalent plastic damage on the interface is mainly generated by the shear stress and the accumulated plastic contributed by the increments of shear stress. Thus the change of the shear stress is the main factor for the contact fatigue damages of coating/substrate system;(3) the frictional coefficient, external loading and coating thickness have some influence on the carrying capacity and contact fatigue life for a coating/substrate system.

通过对TiN涂层／基体系统的数值模拟分析，得到了涂层／基体系统疲劳失效的一些典型规律：(1)、涂层基体的初始损伤首先出现在交界面处，然后沿界面并向基体中扩展，最后导致涂层断裂而发生剥落失效；(2)、在切向滑动和径向挤压循环载荷作用下，交界面处的塑性损伤主要是由剪应力τ产生，塑性累积也是由于△τ的变化引起，说明循环过程中剪应力变化是影响涂层接触疲劳破坏的主要因素；(3)、材料摩擦系数、外界载荷大小以及涂层厚度都对涂层／基体系统的承载能力以及疲劳寿命都有一定影响。

The bond behavior between FRP sheet with FRP shear key and concrete was studied by experiment on a single shear test setup. Test invariables including the height, the width and the length of shear key, appending coarse-sand-coating and concrete compressive strength were considered.

采用FRP板－混凝土块搭接接头的单剪试验方法，考虑剪力键高度、宽度和长度、附加砂粒增强以及混凝土强度等因素，对带剪力键的FRP板与混凝土间粘结性能进行了深入研究。

Considering all of above, combined the subsection of "the study of the repair and strengthening method for existing bridge" with the sustentation fund of Ministry of Education, the bond characteristic, failure mechanism and shear strength computation of interface between new and old concrete and their applications in bridge strengthening are studied through the model test with embedded bar or not. The research works are mainly concerned with the following aspects: Firstly, considering different influence factors, the full-range shear experiment of 6 groups with 18 Z-shape specimens is executed. The bond shear capacity of interface is studied as well as the degree of influence such as interface roughness, agent, strength of new and old concrete, the depth of embedded bar.

本文围绕教育部《高等学校优秀青年教师教学科研奖励计划》之子课题&既有桥梁的维修加固方法研究&，结合有和无植筋状况下的模型试验，研究新老混凝土结合面的粘结性能、粘结破坏机理和粘结抗剪强度的计算及在桥梁加固中的应用。

Usually, maximum shear modulus is determined by strain method in laboratory, rather than by shear velocity method in-situ,and based on it,shear modulus ratio and damping ratio of soil can be provided.

最大剪切模量是影响土的动剪切模量比、阻尼比和土层地震反应的最重要参数之一。

Through a great number of experiments, the paper put forward to shear test index of graded broken stone with self-invented instrument, analyzes its influence rule by varying gradation, water content, compactness, shear rate and lateral compression; studies systematically the changing rule of CBR, infiltration index and thermal conductivity by gradation; works out the suitable biggest particle size, key screen openings and range of their reasonable percentage passing; put forward to graded broken stone design methodology based on CBR and shear strength and construction method in perennially frozen soil zone.

本文通过大量试验，利用自行研发设备，提出了级配碎石的抗剪切性能指标，分析了级配、含水量、密实度、剪切速率、侧压力对抗剪切性能的影响规律；系统研究了级配对CBR值、渗水性能、导热性能的影响规律；通过CBR试验和抗剪切试验，得到了最佳级配最大粒径和关键筛孔及其通过率合理变化范围；提出了基于CBR值和剪切强度双指标控制的级配碎石组成设计方法及适宜多年冻土地区的施工工艺。

Test results show that Taichung Harbor Sand/ concrete block, the interface friction angle and shear strength are difference, related with the size of the grid opening, the grid number of horizontal opening, Soil and the geogrid system has more obvious acts, such as the shear stress to the displacement of shear increases, the interface will increase friction angle.

试验结果得知在上盒台中港砂/下盒混凝土块体，其影响界面摩擦角与剪力强度差异是与格网横向勒条数，开孔大小有关格网横向勒条数越多且网目越小，土壤与格网互制行为越为明显，剪应力将随著剪力位移的增加而增加，界面摩擦角将会提高。

By considering the influences of initial packing fraction, shear rate and friction coefficient on the shear velocity profile, local packing fraction and coordinate number, we have investigate the mean flow features inside shear granular flows.

根据初始体积分数、剪切率、摩擦系数等对系统内剪切速度廓线、局部体积分数和配位数等的影响规律，分析了剪切颗粒系统的平均流动特征。

The results show that the plasticity zone and dynamically quiescent layer become fine equiaxed recrystallisation under the thermo-mechanical effect, the grains in the heat-affected zone grow up because of the effect of friction heat. When the rotation speed is 2 500 r/min and the welding time is 12 s, good joint is achieved, and the tensile shear strength of the joint reaches 9.24 kN. The tensile shear strength of spot increases with increasing tool rotation speed, with increasing welding time, the strength increases first, while then reduces. The microhardness of plasticity zone is high, but is slightly lower than that of the base metal, the minimum value of microhardness is in the heat affected zone. When the energy input of joint is high, the fracture type of spot is mode Ⅰ, and the tensile shear strength is high; on the contrary, when the energy input of joint is less the fracture type of spot is mode Ⅱ, and the strength is low.

结果表明：塑性区和动态静止层的晶粒在热和力作用下发生动态再结晶形成细小的等轴晶，热影响区的晶粒在摩擦热作用下长大变粗；搅拌头旋转速度为2 500 r/min，焊接时间为12 s时，可以获得力学性能较好的焊点，焊点的剪切强度达到9.24 kN；焊点的剪切强度随搅拌头旋转速度的增大而增大，随焊接时间的延长先增大后减小；塑性区的显微硬度较高，但略小于母材，接头显微硬度的最小值分布在热影响区；焊点热输入量较多时，接头为Ⅰ型断裂，焊点的剪切强度较高；焊点热输入量较少时，接头为Ⅱ型断裂，焊点的强度较低。

Now she was hungry and angry.She began to smoulder.

现在她又饿又气，她开始流露难以抑制的怒火。

You have placed our iniquities before You, Our secret sins in the light of Your presence.

诗90：8 你将我们的罪孽摆在你面前、将我们的隐恶摆在你面光之中。