虹吸的

Based on the hydraulic model test of Pudong north road pumping station in Shanghai, the hydraulic characteristics of the forebay were studied in the conditions of no diversion, the set-up of water-depressed plate and the set-ups of water-depressed plate and guide piers . Also, the hydraulic characteristic of the siphon outlet piping was studied.

本文结合上海市浦东北路泵站水力模型试验研究课题，从城市排污泵站布置的特点出发，研究和分析了前池在改善流态无工程措施情况下、设置压水板措施和设置导流墩和压水板组合措施情况下前池的水力特性；虹吸式出水管在虹吸形成过程和虹吸破坏过程的水力特性。

It is understood that total length of 336 meters of the White Horse Gate River inverted siphon movements concrete pipe 200 meters, concrete pipe inverted siphon Body Overall width 33 meters, will need to install 3079.5 tons steel production, 33,137.5 cubic meters of concrete poured.

据了解，总长为336米的白马门河倒虹吸混凝土管身段200米，倒虹吸混凝土管身总宽33米，需要安装3079.5吨钢筋制作，混凝土浇筑33137.5立方米。

A hose connection type anti-siphon vacuum breaker shall be installed where indicated on the plans to prevent the back siphonage of contaminated water.

软管连接类型的反虹吸真空断路阀应该安装在计划标注的防止污染水反虹吸的地方。

To perform a siphonage, the size of the siphon toilet s flush pipe has to be smaller and it will be more possible to be blocked.

为实现虹吸作用，虹吸座厕的排污管设计小，容易堵塞。

According to the existing toilet bowl pipeline shape produced by some enterprises,the effect on the pipeline siphonage which is caused by the alterations of hydraulic packing control point was investigated with the hydrodynamics calculation in this paper.

该文从企业现有的坐便器管道形状入手，首先应用水动力学知识计算水封控制点位置的变化对管道虹吸性能的影响，然后基于计算结果提出更优位置的假设，并依据试验确定其合理的变化范围，最后通过CFD方法模拟改进前后管道中的虹吸速度和虹吸压力，结果表明管道虹吸性能得到了优化。

It is showed that the negative pressure increased with the lengthening of pipe outlet (ranging from 177 to 227 mm), and the siphonage and washing effect were enhanced. The water consumption reduced from 6 L to 5 L and the amount of sewage water decreased, when adjusting the length of pipe outlet to be the best value (227 mm).

结果表明，虹吸管出口段长度为177~227mm时，虹吸过程的负压值随长度增加而升高，虹吸作用随之增强、冲洗性能趋好；长度达227mm时，可使坐便器用水量从6L降至5L，所排污水量随之减少。

The siphonic roof rainwater drainage system ha s found wide application in domestic medium- and large-scale projects.

虹吸式屋面雨水排水系统已在国内的大、中型项目中广泛应用，笔者就虹吸满管流的定义、设计重现期、虹吸系统中的水流流态及适用的计算公式、悬吊管的最小安装高度、自清流速等争议较大的热点问题进行了探讨。

In this thesis, I summarize the theoretical calculation method, applied scope and notice of siphonic drainage system, and point out the advantage of siphonic drainage system compared with gravitation drainage system. In the archetype experiment study of siphonic drainage tube, I adopt different tube diameter and different structural height to survey the drainage volume and press in different place. I observe various kinds of flow state, and get chief factors which influence hydraulic peculiarity of system as the tube diameter or structural height, and find out the relevance of factor to flux. I apply CFD Fluent software and adopt standard k-ε model and RNG k-ε model, then use finite volume method and second-order upwind scheme to discrete numerical model, while coupling numeration of velocity field and press is based on SIMPLE. In the numerical simulation of curved part of tube, siphonic drainage tube experiment system and multi-outlet siphonic drainage system, I make research on internal velocity and press of system in different project condition by changing the tube diameter of curved part, negative press value in tube export and improving the quantity of water gutter. This thesis first adopts a method of combining archetype experiment and numerical simulation to study the siphonic drainage system, test and verify the validity of experiment and numerical simulation, and makefurther study on system, it solves the problems of limited testing conditions, and has a logical results, it can provide a valid method for optimizing and designing the drainage tube-net system. The conclusion have referring value for study and design of siphonic drainage system.

本文首先对虹吸式排水系统理论计算方法、适用范围以及注意事项做出总结，并分析了虹吸式排水系统的优势；再对虹吸式排水管道进行原型试验研究，采用不同管径不同立管高度，对系统流量、管道压强进行量测，观察了各种工况下的流态，对其水力特性进行研究分析，找出影响水力特性的落差、管径主要因素以及与排水量的关系；进一步应用计算流体力学Fluent软件，采用标准κ-ε模型与RNGκ-ε模型，计算过程应用有限体积法和二阶迎风格式对数值模型进行离散，速度和压力的耦合采用SIMPLE算法，分别对系统弯管段、虹吸排水管道试验系统、多斗虹吸式排水系统进行数值模拟分析，通过改变管段弯头处半径、管段出口负压值、增加雨水斗数对不同工况下系统内部的速度和压力进行研究；本文首次采用结合原型试验与数值模拟相结合的方法，对虹吸式屋面雨水排水系统进行研究，试验与模拟相互验证，并进行拓展，很好地解决了虹吸式屋面雨水排水系统由于试验条件限制问题，结果正确合理，为排水管网系统设计和优化研究提供了有效的方法，对工程设计有较好的参考价值。

Crews will slowly ramp up how much it siphons over the next few days.

在接下来的几天中，船员们将逐渐增加虹吸的量。

On the other hand, as illustrated in Picture B and D, the price drop would become material objects' price drop because of the continuous flow syphonage capital. Pictures stood by Picture B and D can become anti-syphonage theory pictures. The syphonage pictures and anti-syphonage pictures can simply stand for two converse investment opportunities. Under normal situations, commodity's syphonage capital flow can demonstrate a slow increasing situation in the long run. But the situation is usually affected by supply-and-demand situation in the middle and short run. Especially in the type of gurantee sum exchange, the supply-and-demand situation is a major factor affecting commodity price even in a price dominated market. The commodity's ultimate price will comparatively alter when the outer influence changes, and sometimes the price may change to a completely converse direction as expected. In case of the above case, we need to observe and research the influential factors. However the research is not like the Butterfly Theory research on slight variables. Syphonage theory deems that if continuous observance extends more than a certain percentage, such as 10% influential factor, and we continue researching, immediately putting 10% influential factors into research scale, we could finish the all-round research on commodity price analysis.

其中，图A和C表示的图形我们成为正向虹吸图形，B和D代表的图形成为反向虹吸理论图形，这种正向虹吸图形和反向虹吸图形分别可以简单代表两种相反的投机机会，在正常情况下，商品的这种虹吸资金流从远期看会表现出缓慢的上升走势，但在中短期，走势经常受到供求关系影响，特别在保证金交易的品种中，即使是价格操纵的市场中，供求关系也是影响商品价格的主要因素，这种以供求关系为主导的市场中，虹吸终值并不是一成不变的，在外在影响因素发生变化时，商品终值也会相应变化，有时甚至会改变到和预期截然相反的方向，这就需要我们经常对相关影响因素进行跟踪和研究，这种研究并不象蝴蝶理论分析的微小变动因素，虹吸理论认为只要连续跟踪超过一定权重，比如10％影响权重的因素，并持续研究，及时将超过10％影响因素事件纳入调查范围，既可完成对商品价格分析的全面性探索。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐