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H.伸缩环转动环伸缩环垫片前轴封 S D / L D / S L M E C H A N I C A L S E A L P U M P S SD/LD/SL SERIES PUMPS The SD/LD/SL series are dependable, self priming pumps. The full motor horsepower is translated into fow via the shaft. These pumps are used for a wide range of applications, from chemical transfer to process solution recirculation to waste treatment. This series is capable of self-priming up ro 20 feet of lift. The mechanical seal is a self-cooling, Tefon bellows which is cooled by the solution being pumped. The construction materials and seals avaiable make this pump extremely versatile. The horizontal design has a working temperature from167℉ to 194℉(75℃ to 90℃), depending on the material of construction, and can handle most chemical solutions. The SD/LD/SL series pumps are designed to run outside the tank or process module. The SD/LD series pumps incorporate a FRPP molded base, legs and pump-to-motor casing. There are no bolts or metallic parts in contact with the solution being pumped.

SD/LD/SL泵是可靠的自吸泵，马达全部的马力经由轴心完全转化为流量，此型泵广泛地使用於从化学药水循环或加工溶液循环到废水处理等各种用途，此型泵可自吸达20英呎，机械轴封是自我冷却的，经由抽送的溶液来冷却，可供应的不同结构材质及轴封使此种泵的用途非常多样化，依其结构材料的不同，其卧式设计的工作温度由75℃到90℃(167℉到194℉)，而且可处理绝大部份的各种溶液，SD/LD/SL是设计用於槽外或加工模组之用，SD/LD加入一个FRPP射出成型的脚座，脚架及泵到马达的外罩，没有螺栓或金属会接触到所抽送的溶液。

States Gaede s invention patent and the evolution history from the early mercury diffusion pump to oil fractionating diffusion pump .

本文叙述了盖得的发明专利，从初期的汞扩散泵到分馏油扩散泵的演变过程。

This paper gives a brief account of heat pump technology and the basic principle,recent development and classification of geothermic air-conditioner ,analyses the existing problems and gives an explanation of the general plotting,structure and main feature in developing water heat pump geothermic air-conditioner for household use.

简要介绍了热泵技术及地温空调基本原理、发展近况、分类方法，分析了其在家用系统开发存在的问题，描述了一种家用水源热泵地温空调开发的总体思路、结构原理及主要特点，并举实施例说明其节能、环保及利于家用推广的优势

It will introduce head loss of the way and part in a pipe, hydrodynamical calculation of a simple pipe, the principle of operation, the structure and the performance parameter of a pump, similarity law and specific speed, as well as matching between the pump and piping, working point and united running et al.

第二篇为给水管网的设计计算，介绍城市给水的分类和用水量标准，沿线流量和接点流量，城市给水管网的水力计算，以及管网设计计算的计算机方法等。

By comparing and analysing, we obtain the variation of the fraction of volume of the vapour inside pump and the variation of efficiency. Thus we know the anti-cavitation and efficiency of the pump how were influenced by different methods of generate blades. The results are good reference for engineers majoring on hydromechanical mechanism

通过对不同叶片水泵內部气体体积和效率进行对比分析，得出了三种不同的叶片成型规律对水泵的抗空化性能和效率的影响，得到的结论对于轴流水泵的设计、改进有一定指导意义。

The result of immobilization showed that hydrophile membranes were more advantageous than hydrophobe ones to act as immobilization carrier. Crosslinking organophosphorus hydrolase by glutaraldehyde on polyethersulfone membrane is a simple and practical immobilization method. An appropriate amount of bovine serum albumin and crosslinker is necessary to get a good result of immobilization. In the biodegradation of methyl-parathion through enzyme membrane reactor, the effect of immobilized enzyme amount, flow rate of peristaltic pump, pH of the feed, and the methyl-parathion concentration on biodegradation rate was studied. It was shown that the biodegradation rate increased with immobilized enzyme amount and substrate concentration. Biodegradation rate didn't increase when the folw rate of the peristaltic pump was larger than 7 ml/min.

然后，研究固定化酶降解甲基对硫磷，从不同材料的膜载体固定有机磷水解酶的比较中，发现亲水膜比疏水膜适合作固定化酶载体；在此基础上，将有机磷水解酶固定在聚醚砜微滤膜上，并制成酶膜生物反应器，用于降解甲基对硫磷；戊二醛化学交联法固定时，酶液与10%牛血清白蛋白溶液的比例在3：1~2：1，与交联剂的比例在7：2~7：4范围内，固定化效果较好，并发现牛血清白蛋白和膜载体有降低酶活损失的作用；将固定化的酶膜装于酶膜反应器降解甲基对硫磷，实验结果表明：反应器的降解速率与固定化酶量呈正比，也随底物浓度的增加而加快，当流速低时，降解速率随流速增大而加快，到7ml/min以上时，降解速率不随流速脑黾佣洌到獾淖畹团ǘ任？

The structure of database of hydraulic model with excellent cavitation characteristic and the design process of the database are completely described, and the building of illustrational database of the single-stage pump and multi-stage pump were presented.

完整描述了高汽蚀性能水力模型库的结构及高汽蚀性能水力模型的设计过程，建立了单级泵和多级泵高汽蚀性能水力模型库。

One example of a new generation LVAD is HeartWare's intrapericardial HVAD. This miniaturized centrifugal pump is capable of generating up to 10 L/min of flow. Its wearless impeller is suspended in the pump housing through a combination of passive magnets and hydrodynamic thrust bearing.

新一代左室辅助装置的安全性能有了明显的提高，研究者试图将其应用于非终末期心衰的患者，以延长这部分患者的长期生存率，这是心衰器械治疗专题会带给我们的信息。

Performance prediction of the pump when transporting water and salt solution is also studied.Results are compared and analyzed with experimental data.6.The salt-out flow field is measured on three dimensions by Particle Image Velocimemter via radial and axial two test models.After image processing, velocity distribution of crystal particles in the pump is obtained.Particle flow field is visualized to reveal the particle motion law intuitionally.

此外对泵送清水和盐溶液时的性能也进行了预测，并将结果与外特性试验数据对比。6、运用PIV在径向和轴向两种测量模式下对泵内不同外部条件下盐析两相流场进行了准三维测量，经图像后处理，获得了盐析晶体颗粒在叶轮内、无叶腔中及轴面上的速度矢量分布，实现了颗粒流场的可视化，更为直观地揭示了泵内盐析颗粒的运动规律。

In order to control the benzene contents in pump operating room, enhance scientific management of the poisons work in the room and keep the health of workers, we adopt poison work classification method to classify tasks in pump operating room according to different concentration, working time and jeopardous level.

jeopardous reason ；为了控制泵间中苯的危害，加强泵间中苯毒物作业劳动条件的科学管理，保障接触苯毒物作业的员工的身体健康，根据泵间中苯不同浓度、员工作业时间和毒物的危害程度，采用有毒作业分级方法，对苯泵间进行作业分级。

As of Tuesday, Google's results were still censored in China.

截至周二，谷歌的搜索结果仍受中国审查。

In order to make the positive action increase and negative one decrease, the sub-forces of the social factors must be adjusted to form a centripetal force.

在这一过程中，人的主体性发挥是社会有机体健康发展的灵魂。