压下

In this work,the processes for purifying the bentonite suspension with high concentrate by hydraulic cyclone and dewater ing,the obtained product by pressure filtration were investigated.

研究了膨润土采用水力旋流器在较高矿浆浓度下进行分级提纯和压滤脱水的工艺、获得的提纯膨润土产品蒙脱石含量高(达95%以上)。

Based on above results, and combined with diagenesis, the controlling factors of reservoirs are discussed.

在煤系地层酸性环境下，强烈压实作用是形成普遍低渗的主要原因。

In this article, a new theoretical model on diametral growth of coiled tubing under the action of an internal pressure is derived based on fatigue cyclic softening and elasticity and deformation plasticity theories.

根据疲劳循环屈服强度衰减模型和弹塑性变形理论，推导了连续油管在内压作用下的直径增长的理论模型。

Negative coefficients occur where there is a downward decrease in velocity and density: for example, at the top of an over pressured shale diapir

只有当速度和密度向下减少时，例如在超压页岩穿刺体的顶部，反射系数才会出现负值。

One or more drive-units are mounted on the bottom surface of the dome-shaped top enclosure, and fire downward at a curved conical diffusor/reflector.

一个或多个驱动器单元安装在圆顶的底面形顶部外壳，消防向下弯曲的锥形扩压器/反射。

This makes the study of the area more difficulty.The sand reservoir clastic fragment, the characteristics of infillings, digenesis and the structure and evolution of pores have been studied by means of many techniques including of microscope, EMS, high pressure mercury intrusion and thin section.

应用显微镜下观察、电镜扫描、高压压汞及铸体等分析技术，对砂岩储层的碎屑组分、填隙物特征、成岩作用以及孔隙结构与孔隙演化进行了研究，尝试运用数理统计方法研究了储层非均质性，分析评价了储层物性特别是渗透率的非均质性。

It can suppress displacement and velocity responses of structure.

试验结果表明局部速度反馈控制，用于调节压电摩擦阻尼器阻尼特性是十分有效的，它可以使结构在不增加加速度响应的条件下降低结构的位移和速度响应。

How? If you stand under a doorway and the doorjamb falls forward or backward you will be crushed by the ceiling above.

如果你站在门口，而门柱向前或向后倒塌的话，你会被掉下的屋顶压到。

This paper referred to simulating the supersonic double cone inlet" s flow field of ramjet pill assisted range projectiles at a variety of working circumstances, pressure contours, density contours and Mach number contours of inlet" s flow field were given When cone combination, relative location of cone core and cowl lip, the pressure of outlet, inflow Mach number and angle were changed, flow field and performance parameters of inlet can be affected. Simultaneity, productive mechanism and inducing factors of the inlet surge were also discussed. Then the best working conditions and the best model of inlet were obtained.

本文对冲压增程弹丸所用发动机的双锥超声速进气道在各种工况条件下的流场进行了数值模拟，给出了进气道流场的等压线图、等密度线图和等马赫线图，从而观察在不同的锥尖角组合、锥芯与外罩唇口的相对位置、出口反压、来流马赫数和攻角时，对进气道流场及性能参数的影响，并探讨喘振现象的产生机理及诱导因素，以便确定最佳的工作状态，得到最优的进气道模型。

Based on Reddy higher-order shear deformation plate theory and general von Kármán-type equations, the analytical solutions for free vibration and dynamic response of simply supported functionally graded plates with piezoelectric layers in thermal environments are described with double Fourier series, where temperature-dependent material properties are taken into account.

基于Reddy高阶剪切变形理论和广义Kármán 型方程，用双重Fourier级数展开法求得了热环境下带压电层的功能梯度复合材料混合层合板的自由振动及动力响应的解析解，分析中考虑了材料热物参数对温度变化的依赖性，讨论了环境温度和控制电压对固有频率及动力响应的影响。

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。