压力

In another cadaveric study, Adams and Hutton58found that the lumbar facet joints resist approximately16% of the intervertebral compressive force when standing erect versus near 0% when sitting, which helps explain the high intra discal pressures during unsupported sitting.59 Finally, after conducting in vitro experiments measuring induced loads on cadaveric lumbar facets, Lorenz et al.60 concluded that with increasing compressive loads, the absolute facet loads increases only slightly, so that the proportion of the axial burden borne by the l-z joints actually decreases with increasing stress.

另一项尸体标本的研究中，Adam和Hutton发现，当直立站立时，小关节承担了逐渐压力的近16%，而坐位时进0%，这解释了为什么在无支持的坐位时椎间的压力非常高。最后，Lorenz在尸体标本加载负荷后测量小关节的应力后，认为增加压力负荷时，小关节间的应力仅轻微增加，因此在轴向负荷中，小关节承担的比例实际随着应力的增加而减少。

According to the above-mentioned experiments, the study select discriminable data which form discriminant function and make discriminant analysis on the objects (students from junior Grade Two and senior Grade Two, with academic achievements ranging from excellence, ordinariness, to failure) with ten members in each group, which leads to a discriminant system of middle school students with different academic achievements.Ⅳ.

本研究研制和开发了WACOM-2005-1型数码写字板，采用手书运动分析技术，分别选择初二、高二年级学优生、中等生、学差生各12至24人进行研究，从自然手书运动、控制性手书运动、在不同压力状态下的手书运动以及手书运动学习四个方面，通过8个系列实验，探索了左右手、有无视觉参与的自然手书运动特点；定点直线、追随手书的控制性手书运动特点；数字认知压力、汉字认知压力、情绪变化、有无噪音条件下的手书运动特点；手书运动学习的特点。

Besides, contact stress in tibia component-polyethylene insert interface of three component design arise 31% to 34% only in dorsiflexion 40 degree and plantar flexion 40 degree due to flat smooth surface design.

二件式人工踝关节的接触压力平均为7.8 MPa，三件式人工踝关节胫骨元件-关节内衬接触面的接触压力平均为4.4 MPa最小；三件式人工踝关节关节内衬-距骨元件接触面的接触压力平均为5.7 MPa居中。

DM soft tissue less and stiffer than healthy group, it's the major factor to cause high forefoot pressure, the ankle dorsiflexion is the 2nd reason, the calcaneus tendon geometry shape was not different between two group.

左脚压力较右脚大之原因为惯用侧，神经病变受测者因本体感觉较差与关节活动度受限使接触时间增加，进而提高压力时间积分，糖尿病足的二、三和四跖骨大於正常足，糖尿病跖骨软组织厚度少於正常足且较硬，此为影响前足受压力影响的主因，背屈则次之，而跟腱的几何尺寸两者并无差异。

Indeed, by increasing the pressure in the right atrium and in the left ventricle with respect to extrathoracic vascular beds, positive-pressure ventilation affects the pressure gradients for both systemic venous return and left-ventricular ejection increase; Fig.

实际上，机械正压通气引起的右心房、左心室内的压力增加，这样和胸腔外血管床形成一定的压力梯度，此压力梯度会影响心肺两系统的静脉回流及左心射血（增加，见图1）。

Based on analysis of the current state of the flow pattern modeling abroad and at home, explains the meaning of the mathematical simulation of the flows in the valve.(2) Comparing flow simulation data of jet pump with its experimental one, the feasibility and reliability of FLUENT used for flow simulation are proved.(3) Based on the characteristic of valves, the fluid field analysis of specific ring-spray type flow-adjustable is finished. The valve structure is optimized to meet the need, which makes it have such advantages:(1)smaller vortex area and faintish vortex intensity, so the vibration of vortex is controlled effectively;(2)the pressure is distributed more equality, the transition area is larger.

论文的主要内容包括：(1)简述了阀门研究的现状与发展，在分析与总结国内外流体流动模拟研究的基础上，探讨开展阀门内水流运动数值模拟的意义；(2)对特定型号的射流泵进行了内部流场的数值模拟研究，并与实验数据相比较，验证了应用Fluent进行数值模拟的可行性和可靠性；(3)针对调流阀的特点，对特大口径环喷式流量调节阀进行流场计算，其设计指导思想如下： 1、控制旋涡，减小旋涡区，减小涡的强度； 2、控制压力分布，使阀体受力更均匀，改善局部应力状态，提高阀门使用的安全性； 3、最小绝对压力高于水的汽化压力，不产生汽蚀。

After Huang Qu senior official yellow Jinlong carries on the contact to finish, immediately defers to the planning for action which formulates in advance, leads side one group of terse motion members, nonstop is rapid rushes recent to the control center, nearly with the ellipse planetoid rugged surface, nearby the flatwise bend thorough giant steam hole, sees only this hole diameter to have about fully 200 meters, this time fierce toward the outside is erupting the pressure full steam; Huang Qu senior official yellow Jinlong earnestly examined without enough time that, then immediately lets the retinue survey group with the most advanced laser analyzer, surveyed has spouted the steam the temperature, the pressure as well as includes other material each data, obtained the data and formerly obtained the data astonishing consistency, in which vapor temperature reached as high as 500 degrees, about the pressure 50 atmospheric pressure, most worrying was in this steam includes some kind of humanity's unknown micro material, possible ambush some kind of unexpected danger, to be needing the further experimental analysis, could obtain the correlation the conclusion!

黄区长官黄金龙进行联络完毕后，就马上按照预先制定的行动计划，带领身边一批精悍的行动队员们，马不停蹄迅速赶到离指挥中心最近的，几乎与椭圆小行星崎岖不平的表面，平直弯曲深入的巨大蒸汽孔洞跟前，只见这个孔洞直径足有200米左右，此时正剧烈的往外喷发着压力十足的水蒸气；黄区长官黄金龙来不及认真查看，便马上让随行探测小组用最先进的激光分析仪，测量了一下喷出蒸汽的温度、压力以及含有其他物质的各项数据，得出的数据和先前得到的数据惊人的一致，其中蒸汽温度高达500度，压力50个大气压左右，最令人担心的是此蒸汽中含有某种人类未知的微量物质，可能潜伏着某种意想不到的危险，需要进一步的试验分析，才能得出相关的结论！

Since its estalishment.the company has always upheld the busness idea"Quality First、Outstanding Keeping Credit,Customer Supreme"The main products link four-column pressure forming machine series,flat vulcanizing machineseries.sheet stretcher series,rubber-plastic foamingmachine series,and pressure forming machine series for friction materials are widly applied to pressure processing the formable materials,rubber products.and forming the themoset materials,etc.

企业自创办以来，始终遵循&质量第一、追求卓越、尊信守约、客户至上&的经营方针；经多年创新与不懈努力，具体产品有：四柱压力成型机系列、平板硫化机系列、薄板拉伸机系列、橡塑发泡成型机系列、摩擦材料压力成型机系列等；广泛适用于可塑性材料的压力加工、橡塑制品等熟固性材料的成形。

The Sulfhydryl content of glycinin and β-conglycinin are increased with the increasing of pressure and prolong of processed time; Fluorescence analysis reveals that glycinin has larger hydrophobic regions while processed by higher pressure; But to β-conglycinin, the hydrophobic regions change according to different pressure; The changes of ultraviolet difference spectra of pressured glycinin show that amino acid residues which have ultraviolet absorbance are exposed on the surface of the protein molecule with its unfolding by high pressure denaturation as well as the exposure of sulfhydryl and dissulfide groups.

处理压力的升高和时间的延长都将使大豆豆球蛋白和β-伴大豆球蛋白的半胱氨酸残基暴露，巯基含量增加。荧光分析表明，经压力处理后大豆豆球蛋白表面疏水区域增多：而对于β-球蛋白，在低压作用下，其疏水区域减少，在高压作用下，其疏水区域增加，但在过高的压力下，β-伴球蛋白中的疏水区域又呈现减少的趋势。

Incurrent research, aiming at the rupture problem engendered in the shooting process of acertain 5.56mm automatic rifle, the strain and stress distributions on the cartridge caseunder the action of axial pull have been analyzed. Based on the theories of elastic-plasticmechanics and contact mechanics, a mathematic and physical model of the cartridge-caseand chamber system has been set up; and based on the platform of the general softwarepackage APDL of ANSYS for finite element analysis, a parameterized model of thecartridge-case and chamber system has also been established. The method for nonlinearFEA has been adopted to analyze the stress distribution on the entire cartridge-case andchamber system, and the method of contact element has been employed to investigate thecontact stress between the cartridge case and chamber, and then the influences of frictioncoefficient and locking space on the static and dynamic stress and strain response of thecartridge case and chamber to the action of power gas have also been discussed. On thebasis of a lot of numerical tests, a kind of element Plane13, which is concentrated incoupled computation of heat and construction, has been used finally to simulate thetransient response of the cartridge-case and chamber system to the power gas. Throughloading the temporary thermal characteristics of explosive gas in the procedure of emulate, the corresponding transient thermal stress distributed on the entire system under thecombined load of transient thermal stress and transient pressure has been obtained. Owingto these comprehensive considerations, the numerical results obtained in this paperrepresent the actual situations comparatively exactly.

本文针对某5.56mm自动步枪在工作中出现断壳的问题，分析了弹壳在轴向拉力作用下的应力应变；基于弹塑性力学及接触理论，建立了弹壳弹膛系统的数学、物理学模型，在通用有限元ANSYS软件的参数化建模工具APDL平台上，建立了弹壳弹膛系统的参数化模型；采用非线性有限元法计算了弹壳弹膛系统的整体应力，引入接触单元法分析弹壳和弹膛的接触压力，探讨了在不同的摩擦系数和不同的闭锁间隙对弹壳弹膛静、动态响应的影响；本文进行了大量的尝试，最后确定采用热、结构耦合单元Plane13，在计算中加载了火药气体的温度历程，成功的获得了弹壳弹膛系统在瞬态的热载荷和瞬态的压力载荷同时作用下弹壳弹膛系统的热应力数值解，考虑因素全面，比较真实的反映了弹壳弹膛系统在火药气体压力和热载荷下作用的情况。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。