水压

Let's say the second mechanism senses the water pressure in the feed pipe and then moves the knob so that it assigns a high level to the toilet when there is high water pressure and a lower level when the pressure is low.

这第二个回路的工作，是为第一个回路寻找目标。比如说，第二个机制在感受到进水管的水压之后就会移动把手，以此给水箱分配一个水线高度，如果水压高，任务高度就高，反之就低。

Let's say the second mechanism senses the water pressure in the feed pipe and then moves the knob so that it assigns a high level to the toilet when there is high water pressure and a lower level when the pressure is low.

这第二个回路的工作，是为第一个回路寻找目标。比如说，第二个机制在感受到进水管的水压之后就会移动把手，以此给水箱分配一个水线高度所谓任务，如果水压高，任务高度就高，反之就低。

Let's say the second mechanism senses the water pressure in the feed pipe and then moves the knob so that it assigns a high level to the toilet when there is high water pressure and a lower level when the pressure is low.

第二个回路的工作，是为第一个回路寻找目标。比如说，第二个机制在感受到进水管的水压之后就会移动把手，以此给水箱分配一个水线高度，如果水压高，任务高度就高，反之就低。

This method and system senses water pressure within the water feed pipe using the water pressure sensing means to automatically and effectively control the water level within the water storage tank through a wireless control process, particularly in the case of an excessively long water feed pipe.

该方法和系统使用水压检测装置检测供水管中的水压，从而自动而有效地通过无线控制流程控制贮水槽中的水位，特别能用于超长供水管的情况下。

Based on the testing analysis of microcosmic digital image, there are smaller Fissions, higher density and even distribution under high confining pressure than under low one. Microcosmic damage mechanics of rock cracking under high confining pressure and hydraulic pressure is given. Reliable testing basis is offered to analyze further failure and stability of the noncircular cave surrounding rock under high confining pressure and high hydraulic pressure.

通过微观数字图像试验分析发现，高围压条件下大理岩断口裂纹长度小、密度大、分布相对均匀，给出高水压高围压作用下岩石破裂产生的微观损伤力学机理，为进一步分析高围压高内外水压条件下非圆形洞室围岩失稳破坏机理提供了可靠的试验依据。

The results show that BS 460MPa grade reinforced bar can be produced all from Q235 or 20MnSi billet by the remained heat treatment process but the production cost of the former is lower. When the water pressure minishes, the intensities of reinforced bar reduce; the higher the temperature at the entrance of cooling bed is, the lower the intensities are. Therefore, the commendatory process parameters are that five stages coolers should be opened, water pressure should be all 1.8～2.0MPa and the temperature at the entrance of cooling bed of Q235 reinforced bar should lower than 650℃. The typical microstructure(Q235): the surface layer is tempered sorbite; the transition layer is pearlite and ferrite, and the partial ferrite is acicular; the core is pearlite and ferrite and the grain fineness is 8～10 grade. The yield strength is reduced by 10～20MPa after natural ageing and it can be simulated by artificial ageing(100℃×2h or 200℃×1h).

结果表明，Q235和20MnSi钢都可以利用余热处理工艺生产出性能合格的钢筋，但前者的生产成本较低；水压减小，钢筋强度降低，上冷床温度越高，强度越低，推荐5段水冷器全开，水压均为1.8～2.0MPa，Q235钢筋的上冷床温度应控制在650℃以下；钢筋典型的金相组织（Q235）表层为回火索氏体，过渡层为珠光体+铁素体且部分铁素体呈针状，心部为珠光体+铁素体，晶粒度8～10级；自然时效后屈服强度下降10～20MPa，用人工时效可以模拟自然时效，工艺是100℃×2h或200℃×1h。

The following results are got:(1) the analytical equation between the overburden pressure, the pore fluid pressure and the matrix stress is established;(2) the nonlinear relation between the porosity of saturated soils and the pore fluid pressure are obtained, which relates to the initial state and the initial pore pressure of saturated soils;(3) Based on the new principle, the rock shear strength theory and hydraulic fracturing pressure formulation are reacquired, which are much more reasonable than the traditional ones.

第二章讲述的是该有效应力原理的一些工程应用研究，通过该研究，我们取得如下成果：（1）建立了上覆岩层压力、孔隙流体压力、基岩应力之间的解析关系式；（2）推导出了饱和土体孔隙度与孔隙水压之间的非线性关系式，该关系式与多孔介质的初始状态及初始孔隙水压有关；（3）建立了基于多孔介质的岩石剪切强度理论和岩石破裂压力计算公式。

Cavitations is the major problems of designing water hydraulic valve, understanding the relationship between shape of valve and cavitations , avoiding cavitations is extremely important, this paper, the numerical simulation and visualization research of flow field is carried out to research relation between the flow field of poppet valve and the length of valve seat by finite volume numerical method.

气穴是研制水压阀存在的主要难题，认识阀口形状与气穴的关系，避免产生气穴现象是极其重要，本文应用有限体积数值计算方法针对阀座倒角长度变化对水压阀阀道内流场的影响进行数值模拟和可视化研究，得到了一些有益的结论：倒角长度的改变对阀口间隙以及阀芯锥面与柱面相接的地方的负压会产生比较大的影响

The operation method, characteristics and notice items of the static pressure test through the height difference between the in and out nozzles of the in-service pressure vessel are introduced. The difficult problems for hydrostatic test of certain kinds of the in-service pressure vessel have been solved ingeniously. And the overhaul cost and maintenance difficulty of in-service pressure vessel have been reduced efficiently.

论述了利用某些在用压力容器出入口连接管线达到一定高度差可产生的静压强进行水压试验的作业方法、特点和注意事项，巧妙解决了某类容器不易进行水压试验的难题，有效降低了压力容器的检修难度和费用。

The theory and methods of ship's hydrodynamic pressure field are also studied, including halfrotator model and shallow-water inferior-critical model.

深入研究了水压场建模的理论和方法，包括回转体模型和浅水亚临界模型，用实测数据对回转体模型和浅水亚临界模型进行验模，为不同条件下选择水压场模型提供了一定的理论依据，并在实测数据的基础上对模型进行了修正。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。