压下

From the view of fracture mechanics, the problem involving a center crack in a rectangular piezoelectric body under anti-plane mechanical shear displacement and in-plane electrical field is analyzed by the boundary collocation method in this paper.

从断裂力学的观点出发，采用边界配置法研究了含中心裂纹的矩形截面的压电材料在平面内电场和反平面变形作用下的应力场和电场的解，详细介绍了该方法的程序设计过程。

Based on the plasto-elastic bounding surface model, the dynamic characters of typical clay and silt were studied through several types of laboratory dynamic tests. The parameters of dynamic bounding surface model were given upon the tests. By using a nonlinear procedure for response analysis of horizontally layered sites subjected to multi-directional earthquake loading, the response of acceleration, pore pressure and dynamic stress in Shanghai area under different earthquakes were studied.

在弹塑性边界面模型的基础上，通过试验，研究了上海地区典型粘土和砂性土的动力特性，取得了针对边界面模型的计算参数，并采用多向地震作用下的水平地层弹塑性动力反应分析程序对以深厚软土覆盖地层为特点的上海地区典型的土层断面，以苏南核电站为主的地震输入进行了场地反应分析，在加速度特性、孔压特性和动应力特性等方面取得了相应的结果。

At 4 pounds per square inch overpressure the damage to a loaded wooden boxcar was more severe.

在每平方吋4磅超压作用下，装有货物的木质车厢受到严重的损坏。

Fully regarded the piezoelectric effect, the electrooptic effect caused by the applied electric field and based on the equation of diffraction efficiency and Bragg condition, the of between the applied electric field, the writing beam ratio with respect to the writing angles are analyzed.

全面考虑了电场作用下晶体的压电和电光效应，基于衍射效率公式和光栅的布拉格条件，给出了为获得最佳衍射效率比时外加电场及写入光束比与记录角度间的关系曲线。

If you hold your penis pressed breathlessly to her womb it is Piditaka.

如果您持有您的阴茎压到她的子宫里上气不接下气是 Piditaka。

Sometimes, the value of the printed on a flat brush wheel pressure too seriously, to gauge side must increase resistance paper La poorly in this case, you should set the oblato brush round of adjusting screw meanders by inverse rotation axis until the brush, and then press stop to pre-senile meanders turn 1 ~ 2 go, so that the brush can turn in the rotation on paper with the same ease even better.

有时，负纸版上的扁毛刷轮压得太轻，给侧规处事补充必定的阻辛而变成纸弛不推不到位，在这种环境下，答不兵扁毛刷轮的调度螺丝按逆时钟标的目的不静弹，直至毛刷轴罢手不静弹，然后按顺时钟标的目的不静弹1～2不停，使毛刷轮在纸背上能不静弹自若不离算调度好了。

Companies rely on advanced quality management system, strong technology development strength - in constant demand by customers for the purpose of focus, the commitment to the development of China's vacuum valve creatively continuously reliable performance, beautiful appearance of the products, have in hand , gas, electric butterfly valve, valve, damper valve, electromagnetic valve differential pressure, electromagnetic valve, ball valve, valve plates, etc. more than 10 series vacuum valves, as well as various specifications and models of high school low-pressure valve and hydraulic control valves.

公司依靠先进的质量管理体系，雄厚的技术开发力量—在不断地以顾客需求为关注焦点的宗旨下，致力于我国真空阀门的发展，创造性地不断推出性能可靠，外形美观的产品，有手，气、电动的蝶阀、隔膜阀、挡板阀、电磁压差阀、电磁截止阀、球阀、插板阀等10多个系列真空阀门，以及各种规格和型号的高中低压阀门和水力控制阀门。

Cable reel motor torque constant tension which has the characteristics When the load increases in the motor output shaft speed will automatically come down, volume Rao assured when cable tension unchanged. Rao nature of this excellent performance closely integrated with the Volume; Cage used motor hysteresis coupling increases in size, functionality, easy installation, the constant tension similar characteristics, we can under the conditions required output torque. They can pull the cable external circumstances, hysteresis coupling protect cables; using torque motor controller to increase frequency hysteresis couplings Surge part because of the cable reel SCR converter using a new technology operation, smoothing adjustments to the motor terminal voltage, thereby ensuring that the output torque of the motor unchanged. so that the cable can smooth the road with the truck

其中力矩电机电缆卷筒具有恒张力的特点，当负载增加时电机的输出轴转速能自动随之降低，保证电缆卷饶时张力不变，这个优越的性能与卷饶性紧密结合；采用笼型电机加磁滞式联轴器具有体积小，功能全，安装维护方便，近似恒张力等特点，既可以根据工况需要输出力矩，又可以在电缆受外力拉住的情况下，通过磁滞式联轴器保护电缆；而采用力矩控制器加变频电机加磁滞式联轴节的电缆卷筒因其调压部分采用可控硅变流新技术，可以平滑地对电机的端电压进行调节，从而保证了力矩随负载的变化而改变，使电缆能平稳的跟大车的行进。

The exterior curved surface of tool handle was obtained according to the camber of human body under pressure.

为减小手持工具使用者承受的压强峰值并提高总体舒适度，设计了有压反求的实验方法，根据人体曲面在压力下的形状得到工具手柄表面曲面。

Under constant groundwater table boundary condition,water content distributions along the heights of capillary rise of samples under three different compactness are presented in this paper.And the isothermal moisture diffusion coefficient was also obtained by Bruce method.

在常地下水位边界条件下，获得了三种不同压实度土体的含水量随高度的分布规律，并利用Bruce推导的方法计算了等温水分扩散系数。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。