查询词典 fluid

The fundamental concepts of micropolar fluid , couple stress fluid, fractional Maxwell fluid and smart fluid are described.

简要介绍微极性流体，应力偶流体，非整数阶Maxwell流体和智能流体的基本概念，通过简单的例子阐述它们与牛顿流体的本质差别，并介绍非牛顿流体在以上热点研究领域的若干进展。

The invention discloses a treating method of tail water membrane filtering condensation fluid in chemical industry park, the steps of which are that the pre-treated membrane filtering condensation fluid goes through a device filled with resinous adsorbent under the common temperature and a flow quantity of 0.5-8BV / h, the absorbed water can be discharged after neutralizing with small capacity of alkali, desorbing and regenerating the resin by natrium hydroxydatum solution with the flow capacity of the desorbing agent is 0.5-3.0BV / h, the high concentration desorbing fluid disposes safely and the low concentration desorbing fluid can be periodically used to preparing next pluralities of desorbing agent.

本发明公开了一种化工园区尾水膜滤浓缩液的治理方法。其步骤为：将预处理后的膜滤浓缩液在常温和0.5～8BV/h的流量条件下，通过装填有树脂吸附剂的装置，吸附出水加少量碱中和后即可排放；将上述树脂用氢氧化钠溶液脱附再生，脱附剂流量为0.5～3.0BV/h，高浓度脱附液安全处置，低浓度脱附液可用于配制下一批脱附剂循环套用。

It was considered that the control of the PRD fluid performance and the dosage of flow pattern adjusting agent PF-VIS were the key of the technique. The viscosity of PRD spudding fluid increased rapidly with the decrease of shearing rate, it indicated that it had good sand carrying ability. The spudding fluid was good capacity of high temperature stability under the low shearing rate, its viscosity was much higher than that of traditional drilling fluid, it was beneficial for cutting carrying in big deviated wells and preventing the formation of cutting bed.

认为要控制好PRD弱凝胶钻开液的性能，流型调节剂PF-VIS的加量是关键；PRD弱凝胶钻开液的粘度随着剪切速率的降低而急剧上升，显示了其优良的井壁携砂带砂性能；PRD弱凝胶钻开液体系具有较好的高温稳定性；PRD弱凝胶钻开液体系在低剪切速率的高粘度，大大高于传统聚合物钻井液，有利于在大斜度井携带岩屑以及防止岩屑床的形成。

With the fluid-solid coupling of train oil tank clue to train speed increase, the fluid-solid coupling modal analysis of G70B oil tank is calculated by NSYS. The finite element model of fluid-solid coupling system is set up. The fluid-solid coupling modal analysis of G70B oil tank is done for light oil tank train under different kinds of loads and its natural frequency and modal shapes are obtained.

针对列车油罐因列车提速导致液固耦合作用突出的问题，运用ANSYS软件对轻型油罐车G70B型罐体的液固辐合模态响应进行实例分析和计算；建立车载油罐的液固辐合系统有限元模型；对轻型油罐车G70B型罐体进行在不同贮液比时的液固福合模态分析，得出固有频率和模态振型图。

Cut off cut-off valve is mainly used for fluid pathway, including the cut-off valves, gate valves, plug valves, ball valves, butterfly valves, diaphragm valves, control API Cast Steel Valves valves and other folders; The main control valve for regulating fluid pressure, flow, etc., including control valve, throttle, valve and float valve, etc.; Check valve used to prevent reverse flow of fluid; Shunt valve fluid channel for distribution of destination, or two-phase separated, including slide valves, multi-valve, trap, and emptying valves and so on; Safety valve is mainly used for security, to prevent the boiler, pressure vessel or pipeline overpressure due to the damage; Multi-valve is a valve with more than one function, such as the cut-off valve can both start and end back from the role of the role of drying.

截断阀主要用于截断流体通路，包括眼镜阀截止阀、闸阀、旋塞阀、球阀、蝶阀、隔膜阀、夹管阀等；调节阀主要用于调节流体的压力、流量等，包括调节阀、节流阀、减压阀和浮球调节阀等；止回阀用于阻止流体的逆向流动；分流阀用于分配流体的通路去向，或将氧气专用阀、铜阀门两相流体分离，包括滑阀、多通阀、疏水阀和排空气阀等；安全阀主要用于安全保护，防止锅炉、压力容器或管道因超压而破坏；多用阀是具有一种以上功能的阀门，如截止止回阀既能起断流作用又能起止回作用。

Beginning with forming mechanics of seal medium, the character of magnetic fluid has been researched and magnetic fluid, which fits the demand, is made out. Then from the point of fluid mechanics, the kinematics equation and Bernoulii equation of magnetic fluid are derived. Based on the production practic of sinterer, straight seal theory is given. Last of all, the accuracy of deriving of theory is proved by experiment.

作者首先从密封介质的形成机理入手，分析了磁性流体的性质，配制出符合要求的磁性流体，又从流体力学的角度推导出磁性流体的运动学方程和磁性流体的贝努力方程，根据烧结机生产的实际，进一步推导出应用于烧结机上的直线密封理论，最后通过试验验证了理论推导的正确性。

The fluid inclusion can be the ancient fluid sample which formed rock or ore body, and the data drown from fluid inclusion can explain the contemporary ore-forming environment ,so the fluid inclusion is more and more used in the study of ore depositsThe Daxigou gold deposit which is studied this time is located in the north Hebei

本次研究的大西沟金矿床处于华北板块北缘冀北-辽西成矿区，其成矿条件在本区有很大的代表性。

Remedial group (60) amount to with ginkgo not inject fluid 20mL joins drop of the vein in 500mL of fluid of 5% dextrose inject to note, daily 1 times; contrasts group (60) drop of the vein in joining 500mL of fluid of 5% dextrose inject with 20mL of fluid of inject of the root of red-rooted salvia of medicine made of two or more ingredients is noted, daily 1 times; period of treatment all is 14d.

治疗组(60例)用银杏达莫注射液20mL加入5%葡萄糖注射液500mL中静脉滴注，每日1次；对照组(60例)用复方丹参注射液20mL加入5%葡萄糖注射液500mL中静脉滴注，每日1次；疗程均为14d。

Using fluid dynamics FEM (two dimensional, three dimensional andaxisymmetric) and three dimensional acoustic FEM in meticulous analysis ofexpansion muffler structure, this paper studies the influences of each mufflercomponents' position, dimension, form and quantity on the fluid dynamic andacoustic performances;therefore the paper indicates that the end of the intruding tubeis the linchpin of the fluid dynamic performance of the whole muffler structure, thespringhead of muffler fluid dynamic performance is the smoothness of air current, themain factor which affects the acoustic attenuation value of expansion chamber muffleris the grade of saltation of the section of air conducting access, and the attenuationvalue of specific frequency can be dramatically enhanced by carefully designing thelength of expansion chamber.

本文通过流体力学有限元方法和三维声学有限元方法对扩张腔消声结构的参数化模型进行了细致的分析，研究了这种结构的各个组成部份的位置、大小、形状和数量对其流体力学与声学性能的影响，指出插入管端口是影响整个结构流体力学性能的关键，消声结构流体力学性能的根源是气流通过时的平稳程度；影响扩张腔消声量的主要因素为声波传播通路截面突变的程度，并可以通过精细的设计扩张腔轴向长度获得宽频或指定频率消声量的大幅度提高。

Different types of drilling fluid systems were used in over 30 under-balanced wells by New Star Company of SIN OPEC in recent years, and the low solids polysulfonated drilling fluid, solids free salt-water polymer drilling fluid, and low density emulsified diesel drilling fluid were focused in this paper, with their laboratory evaluation results and field applications desc...

针对中国石化新星公司近几年在不同地区施工的30余口欠平衡井所用不同类型的钻井液体系，介绍了低固相聚磺钻井液、无固相盐水聚合物钻井液、低密度乳化柴油钻井液3种钻井液的室内性能评价结果以及现场应用情况，并在此基础上总结分析了各钻井液体系所适用的地层以及其优缺点。

It is also known as one of the most poisonous naturally occurring substances.

它也被称为一个最自然发生的有毒物质。

The greatest stress is found at the location on the cross section where V is the largest.

最大应力出现在横截面上V为最大的地方。