反压力

In combination with the crushed rock slope as an example, the allocation of an anchorage force on longitudinal beams and transverse beams is calculated by adopting the distribution coefficient law of the nodal form at first. Then the internal forces of the lattice beam are calculated respectively through the software on the basis of Winkler elastic foundation model and the semi-infinite foundation model, and then compared with the internal forces which are based on simplified foundation pressure calculation. The active pressure of rock is calculated approximately by Ranking soil pressure theory in the working stage. Sequentially, the reinforcing bars are disposed by two-stage's averagely calculated values.

以破碎岩质边坡为例，采用节点荷载分配法计算了锚索锚固力在格构梁纵、横梁之间的分配比率，然后基于Winkler弹性地基模型和弹性半空间地基模型分别计算格构梁在张拉阶段的内力，并与采用简化的地基反力计算值对比；采用朗肯土压力理论近似计算在工作阶段主动岩体压力，将地梁视为在线性分布力作用下倒置于坡面上的连续梁，按力矩分配法计算地梁内力，取两阶段计算平均值进行配筋。

Based on the variational principle of initial post-buckling theory, the neutral equilibrium equation of the arch under uniform compression is derived.

基于初始后屈曲理论的变分原理，导出了圆拱在均匀压力作用下弹性失稳的中性平衡方程，并计算了圆拱反对称屈曲的临界压力，得到了与经典解一致的结果。

Hydraulic system B provides fluid under pressure of 3000 psi to portions of the flight control, landing gear, and thrust reverser systems.

系统为下列系统提供压力：液压 B 系统提供小于 3000PSI 的压力给飞行控制，起落架及反推装置系统。

When the standby pump is turned on, pressurized fluid is delivered to two motor-operated shutoff valves on the standby pressure module and to two thrust reverser shuttlee valves.

当备用泵打开时，压力被送往备用压力组件的两个马达控制的截流阀和两个反推装置截流阀上。

In this paper, based on nonlinear FEA software ANSYS/LS-DYNA, 3D dynamic simulation models of eighteen-type tubes for backward spinning was established. This paper not only obtained spinning force of tube backward spinning but also obtained the spinning force curves varying with the different reducer ratio, feeds, fillet radius for spinning roller, forming angle and diameter of spinning roller, and diameter blank inner.

以大型非线性有限元软件ANSYS/LS-DYNA为分析平台，通过对18种几何尺寸和参数不同的筒形件三旋轮强力反旋旋压过程的三维动态模拟，得到了它们的旋压力以及旋压力随不同减薄率，旋轮进给量，旋轮圆角半径，旋轮成形角，旋轮直径和毛坯内径的变化曲线。

Especially, it is found that there exists three types of relative permeability of water such as concave, convex to the water saturation ax and the reversed "S" pattern. The super-low permeability reservoir is sensitive to pressure, apparent with millipore undersaturation and water blocks. In this study, a new concept of irriducible undersaturation is brought up. And a new mode to describle the process of imbibition dynamics is used to reveal and confirm the mechanism of pinhole enveloping macropore as following: pendular ring of wetting phase gathers→it fills throat→it truncates nonwejting phase . The expression of pressure distribution and the equation of oil production are deduced under conditions of non-darcy linear seepage and non-linear seepage.

尤其发现水相相对渗透率曲线存在凹向、凸向含水饱和度轴及反S形三种形式；特低渗透储层的压力敏感性强，微孔隙的欠饱和及水锁效应显著，本文研究中提出欠束缚水饱和度的概念，引用一种描述渗吸动态即湿相液环聚集→充填喉道→截断非湿相的演化过程的新方法，更深刻地揭示和证明了&小孔包围大孔&机理；推导出了非达西线性渗流和非线性渗流条件下的压力分布表达式和油井产量方程。

Findings in this study also indicate that warpage is inversely proportional with mold temperature, melt temperature, packing pressure and packing pressure time but directly pro- portional with cooling time at least for the problem of interest.

这研究的调查结果也指出翘曲对模子温度、融化温度感到反的比例，包装压力而且包装压力除了 directl 之外计时职业者- portional 用冷却的时间至少为重要问题。

The temperature controlling system can automatically control bases the different wrappage 's specifications, basis on different instance, the pressure controlling system adjust pressure automatically cooperate with standard mode, to do revise of stopping pressure, which is greatly available for preventing distortion and disrepair of vessel and increase the rate of finished product.

温度控制系统可灵活地根据不同包装物的特点进行自动控制，根据不同情况，压力控制系统配合标准模式自动调整压力，进行反压校正，这对防止容器的变形和破损，提高成品率十分有利。

This research method is to use the three-dimensional mapping software to draw the cardiovascular stent of different size first , next is it create their cardiovascular stent boundary conditions and simulation their of support after implantation according to finite element method into the human body to go; Receive different residue pressures and pressure of the repeated blood circulation , greatest stress , meets an emergency and the relation between total deformation amount caused; Being imitated the cardiovascular stent , the position with damage of fatigue life in the blood vessel by its greatest stress value at the same time ; But by the simulation result of the above , can understand that use life of Palmaz-schatz cardiovascular stent has been more than 109 up till now ; At the same time , can know the position where the stress two times concentrates , the right angle position joined in the rib and rib of Palmaz-schatz cardiovascular stent too.

本研究的方法乃是先会使用三维绘图软体画出不同尺寸的血管支架，然后在根据有限元素法去设定其血管支架的边界条件和模拟其植入人体后；受到不同的残留压力与反覆血液流动的压力，所造成的最大应力、应变及总变形量之间的关系；同时在由其最大应力值去模拟血管支架，在血管中的疲劳寿命与疲劳损坏位置；然而由以上的模拟结果，可以了解到目前Palmaz-schatz血管支架之使用寿命为109以上；同时也可以知道二次应力集中的位置，在Palmaz-schatz血管支架之肋和肋连接的直角位置。

The third series of products are vibrating-wire sensors and 6 sets of testing instruments, including TX soil-pressure gauge, GX reinforcement forcemeter, FX counterforce gauge, SX pore pressure gauge, BX strain gauge, XX concrete stress gauge, MX rope dynamometer, vibrating-wire frequency meter, declinator, water-level meter and settlement meter, all of which are used for geotechnical engineering tests.

第三大系列为各类钢弦式传感器，仪器检测试验设备6套。产品主营有TX型土压力计、GX型钢筋测力计、FX型反力计、SX型孔隙水压力计、BX型应变计、XX混凝土应力计、MX锚索测力计、振弦式频率仪、测斜仪、水位仪、沉降仪、系列用于各类土工检测。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。