水压的

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。

Based on the compressibility, viscosity resistance and the working house system's deformation etc, flow equations of distribution spool, hydraulic tube and fluid cylinder for 300 MN die forging hydraulic press were established, and dynamics equations of moving beam and upper beam were established based on analysis. The dynamics mechanical-hydraulic coupling model of driving system was established.

考虑流体的可压缩性、粘性阻力及工作框架系统变形等因素，采用解析法建立300 MN模锻水压机动梁驱动系统分配阀口、液压管道、液压缸的流量方程以及动梁和上横梁的动力学方程，得到驱动系统的动态机液耦合模型。

Based on the compressibility, viscosity resistance and the working house system's deformation etc, flow equations of distribution spool, hydraulic tube and fluid cylinder for 300 MN die forging hydraulic press were established, and dynamics equations of moving beam and upper beam were established based on analysis. The dynamics mechanical-hydraulic coupling model of driving system was established.

摘 要：考虑流体的可压缩性、粘性阻力及工作框架系统变形等因素，采用解析法建立300 MN模锻水压机动梁驱动系统分配阀口、液压管道、液压缸的流量方程以及动梁和上横梁的动力学方程，得到驱动系统的动态机液耦合模型。

Then, experimental study on the noise performance of the hydraulic piston pump under different conditions has been accomplished.

针对一种新型的阀配流式水压轴向柱塞泵的结构特点，分析其噪声产生的机理，在不同条件下对水压泵进行噪声特性的试验研究，并在此基础上提出有效的降噪措施。

Considering nodal pressure as the evaluating indicator, functional reliability indexes of the nodes were calculated by the mean-first-order-second-moment method which was originally developed for structural reliability analysis.

在进行供水管网的抗震功能可靠度分析时，借鉴结构可靠度的分析方法，以节点水压为评价指标，采用均值一次二阶矩方法计算管网各节点的功能可靠度，该方法通过一次水力分析即可给出震后低压供水和渗漏状态下管网各节点的可靠性指标，较之前发展的随机模拟方法大为简化且概念清晰。

Considering nodal pressure as the evaluating indicator, functional reliability indexes of the nodes were calculated by the mean-first-order-second-moment method which was originally developed for structural reliability analysis.

在进行供水管网的抗震功能可靠度分析时，借鉴结构可靠度的分析方法，以节点水压为评价指标，采用均值一活动板房次二阶矩方法计算管网各节点的功能可靠度，该方法通过一次水力分析即可给出震后低压供水和渗漏状态下管网各节点的可靠性指标，较之前发展的随机模拟方法大为简化且概念清晰。

Kai new commitment to the continued development of innovative, advanced equipment to adhere to guarantee the quality of products, from the bellows of a single type of hydraulic up to the automation of continuous pressure molding, stainless steel hose from the longitudinal seam to strip winding telescopic hose, with Path of the products from 20 mm to 400 mm range, more than 80 kinds of specifications, the annual output more than 500,000 bellows hose and vibration of professional enterprises.

启新人致力于持续的发展创新，坚持以先进的设备保证产品质量，从波纹管的单个液压涨型到连续的自动化水压成型，从纵缝不锈钢软管到钢带缠绕伸缩软管，具备了产品通径从20mm到400mm不等，80多种规格，年产量超过50万只波纹管和减振软管的专业企业。

It was shown that coal seam floor failure depth of working face 2121 was 32.5 to 5 m, approximately three times as deep as that of shallow working face(in genera l,9.15 to 12.0 m). Coal seam floor failure depth increased with mining depth. Potential risk of water inrush through coal seam floor of working face 2121 is much higher for deep mining than for shallow mining.

试验结果表明：该工作面底板破坏深度为32.5~35 m，比300 m采深以内的工作面实测深度(9.15~ 12.0 m)增加2倍以上，说明随着开采深度的增加，煤层底板采动破坏深度呈明显增大的趋势，因此，在水压和破坏深度二者同时增加的条件下，2121工作面深部煤层开采的突水危险性远远大于浅部煤层。

In a market economy, enterprises must attach great importance to technological progress, and to take practical actions to achieve universal adoption of concrete admixtures; scored with ribbed steel bars of variable cross-section to replace the glossy steel as the production of prestressed Concrete products and reinforced concrete products, reinforced; concrete mixing system to the early realization of microcomputer control; by roll welding machine to replace the hand-made steel skeleton of banding; centrifugal molding, product testing, as well as a phase of water pressure of the pressurized pipe to achieve the conservation process of automatic control ; vigorously promote energy conservation, etc.

在市场经济条件下，企业必须高度重视技术进步，并采取可行的措施，尽快实现普遍采用混凝土外加剂；用带肋刻痕的变截面钢筋取代光面钢筋作为生产预应力混凝土制品和钢筋混凝土制品的配筋；混凝土搅拌系统要尽早实现微机控制；用滚焊机取代手工绑扎制作钢筋骨架；离心成型、产品水压检验以及一阶段制管的加压养护过程实现自动控制；大力推广节能养护窑等等。

Consider also having a hydraulic ram pump (and instructions on how to use, or to build one from scratch, along with sufficient piping to move water....which can be "scavenged" from a home plumbing system) and/or 12V water pumps in storage which may be of use in designing a primitive water distribution system for the home or for crop irrigation (i.e., water can be channeled up to an elevated holding canister).

还要考虑有一个水压撞锤式水泵备有怎样使用的说明书，或从头开始造一个，要有充足的导管取水。。。。。。这可从家庭配管系统中搜寻到）。也可考虑存留一个12伏的电水泵，在为家庭或庄稼灌溉设计原始的水分配系统时，它也许有用处。例如，水可被传输到升高的支持罐中。

The reasons of iron ions content overproof in grade Ⅱ desalting water system,such as variation water quality,contamination of regenerant , operation adjustment of pretreatment system and switching operation of bed were discussed.

对二级脱盐水系统中铁离子含量超标的原因，如来水水质发生波动、再生剂受到污染、预处理系统操作调整、床体运行切换等进行了论述。

You were hired to drum up new business, so go and do it.

公司雇你招徕新业务，你就做你的事好了。