水力

In addition, the trajectories of oil droplets entering the hydrocyclone were computed by using the Particle Obit model. Thereby the separation efficiency of the hydrocyclone can be obtained.

另外，本文用颗粒轨道模型计算了进入水力旋流器的油滴颗粒运动轨迹，在此基础上，得出了水力旋流器的分离效率曲线。

Conditions of the seepage and stress is a dynamic process, and also shows its interaction and interdependence. Owing to the closure of the fracture, the hydraulic gradient and the permeability pressure of the fracture turn large, and also promote the expansion of water cracks, and fissures connectivity increasing. The increase of the crack opening width will result in the increase of the infiltration capacity and seepage flow, and the reduction of seepage pressure. Because of the dynamic dependence of the fracture aperture, pressure and seepage, under certain conditions, changes in fracture aperture can lead to the formation of local water-passage, and the local emission of high pressure water, and thus promotes the formation of the sudden outgush disasters.

结果表明：洞室开挖完成后，在围岩渗流与应力耦合作用下，围岩中裂隙隙宽、裂隙中水压及其渗透流量的变化是一个动态过程，且相互作用与相互依赖；裂隙的闭合使得结构面水力梯度变大，作用在裂缝上的渗透压力增大，促进导水裂缝扩展，裂隙连通性增加；裂缝张开度增大，渗透能力增强，渗流量增大，其渗流压力相应降低；由于围岩中裂隙隙宽、压力和渗流量的动态依赖性，在一定条件下，裂隙隙宽的改变可导致局部水力通道的形成，高压水头从局部涌出，从而促进突水灾害的形成。

Borrowing the hydrodynamic model Needham used to describe the history of world science (the rivers of the primitive and medieval sciences of all the world's cultures flowing into the ocean of modern science), we can identify the rivers of influence that flowed into the ocean of Needham's Problem:(1) the nature of organic form;(2) the small ocean or lake of Christian theology into which ran the streams of the Society of Friends, the Oxford movement (the Catholic revival in the Church of England), and the Anglican order, Oratory of the Good Shepherd.

借用水力动力学模型，李约瑟开始描述世界科学的历史（而水力动力学模型则是指：原始的河流，以及全世界文化的中世纪的科学最终都流入到了现代科学的海洋里），我们可以把李约瑟问题界定为流入海洋的如下影响之河：（1）有机形式的本质；（2）基督教神学的小海洋或者湖泊流淌着如下的溪流：朋友社会；牛津运动（即英国教堂的天主教复兴）；英国国教徒的等级序列，耶稣牧羊人的演讲术。

It is of importance theoretical and practical for the analysis of the stability of penstock, especially for that of the resonance of hydraulic turbine.

这对于水力发电机组压力钢管水体共振现象的认识和水力故障的判断提供了一定的借鉴和参考。

Comparison of the results of experimental study and theoretical analyses further shows that the nesessary condition for the hydraulic fracturing of a soil is that the minor principal stress on the inner surface reaches the tensile strength of the soil under the action of water pressure.

试验研究与理论分析结果的比较进一步阐明促使土体发生水力劈裂的必要条件为在水压作用下内壁表面的最小有效主应力达到土的抗拉强度，从而指出过去采用的那些水力劈裂判断准则，如水压超过最小总主应力等等，都是不正确的。

On this basis, we use numerical value to simulate the waterpower parameter of the PDC Bit, we use Visual C++ plait the PDC Bits waterpower parameter calculation program.

在此基础上对PDC钻头的水力参数进行了数值模拟，用Visual C++编制了PDC钻头的水力参数计算程序。

GS was in the original series hydraulic pulper developed on the basis of which the efficient and energy-saving products, its main advantages are

DSA系列高浓度水力碎浆机，是在原ZGS系列水力碎浆机的基础上研制而成的高效节能型产品，其主要优点为

Can also be set up in high concentration hydraulic pulper, from the high concentration of water in the pulper out of waste pulp for coarse screening to remove large, heavy debris to reduce the flow back of the burden of screening equipment, large-scale paper machine And high output device of choice.

用于对废纸浆进行粗大杂质的筛选，可设置于高浓水力碎浆机之后，对从高浓水力碎浆机中出来的废纸浆进行粗筛选，除去大、重、杂物，减轻后面流程中筛选设备的负担，是大型纸机，高产量的首选设备。

Pulper with water, sediment well, composed of cylindrical screen pieces of paper solution purification system for hydraulic pulper of the tailings and to further ease the severity of the separation of impurities.

与水力碎浆机、沉渣井、圆筒筛组成废纸碎解净化系统，对水力碎浆机的尾渣进一步疏解并分离轻重杂质。

In this paper, hydraulic performance tests on two sprinklers under different conditions are conducted. The two sprinklers are widely used for gardens irrigation in China, named model R50 of Rainbird Company and model PGP of Hunter company. On account of the sprinkler's structure, preliminary analysis on the tested data is also made. Based on the tested data, some advice on the best choice and layout of the sprinkler in irrigation design is presented.

文中对国内目前应用最多的两种园林灌溉喷头——美国Rainbird公司的R50型及Hunter公司的PGP型喷头作了不同工况下的水力性能测试，并结合喷头的结构对测试数据进行初步分析；在水力性能测试结果的基础上，对园林灌溉系统设计中喷头的合理选用与布置提出了几点建议。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失