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Connnection type Teflon corrugate dpipe has many kinds of connection type.in general,it can use flange conn.,oil--conne.and directly connected with pipes fixed with p;ipe clip or wire.we can also produce dn4-32MM non net casing f4 fstened hos,or supply coressponding conn.from as per request of users.

聚四氟乙烯波纹管连接方式有多种。一般可用法兰连接，油任连接，螺纹连接，快速接头，以及直接与管件连接，以管卡或金属丝固定。DN4-32mm无波网套F4扣压软管均可生产，我厂亦可根据用户的要求提供相应的连接方式。

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。

Firstly,all patients have been excided the upper ductus choledochus,the liver gross duct,left right liver duct besides one centimeter of liver duct that lies upwards the hepatolith.Secondly, we have sutured the excided bile duct, which has been shaped acetabuliform,lifted one part of jejunums,intered non-port one subcuneously,and then inosculated gall with enteron by Roux-en-Y way.Lastly,we have partly excised the ill liver in regular way.Results 26 ones have been follow-up for 1～10 years.The rate is 81 percents,average for 6 years.

32例肝内胆管结石均接受皮下盲袢型胆肠吻合术，其中结石位于右肝7例（22%），左肝9例（28%），两肝均有16例（50%）；结石合并肝胆管狭窄24例（75%），全部病例均切开胆总管上部、肝总管、左右肝管，并切开肝内胆管狭窄部以上1cm肝管，将切开的胆管做必要的缝合，形成碟状，取一段空肠上提，盲袢埋置皮下，再做胆肠Roux-en-Y吻合，病肝做规则性肝部分切除术。

The results showed that the contents of glutamic-pyruvic transaminase and glutamic oxaloacetic transaminase in part of the dogs were high and spontaneous pathologic changes occurred in the important organs, such as lung, kidney and brain. The incidences of interstitial pneumonia, cerebral ependymitis and vascular infiltration were high. Cloudy swelling and vasular degeneration appeared in part of hepatocytes and epithelial cells of renal tubules.

实验结果为部分犬的肝功能谷丙转氨酶和谷草转氨酶偏高；肝、肺、肾和大脑等重要脏器有自发性病理改变；肺的间质性肺炎和大脑室管膜炎及血管围管性浸润发生率较高，部分肝细胞和肾小管上皮细胞呈现浊肿或空泡变等。

Perianth usually with 1 petaloid whorl (in Saruma with 2 whorls: outer one sepaloid, inner one petaloid), mostly connate into distinct tube, cylindric to campanulate or subglobose; limb rotate, urceolate, cylindric, or ligulate, 1-3-lobed; lobes valvate.

花被通常形成管状一轮(在马蹄香属里有花被2轮：外部一个萼片状，内部一个花瓣状)，大部分合生成显著的管，圆筒状钟形的或近球形；花被管螺旋状，瓶形，圆筒状，或者舌状，1-3 分裂；裂片镊合状排列。

On the basis of NCIDI-designed fire-tube boilers and their operation,and through analysis and comparison, the paper proposes the suitable type of fire-tube boiler for large-size high-parameter sulfur-based sulfuric acid production,and summarizes key points for structural design of critical components.

由于硫磺制酸的炉气清洁无尘，比较适合采用火管锅炉，再加上火管锅炉结构简单、操作方便、运行可靠、运行费用低，特别是中小型火管锅炉的投资比水管锅炉省等优点，所以最近几年来火管锅炉在硫磺制酸上的应用有了长足的发展。

Most of our patients complained of a variable degee of pruritus (11/15). Nine patients had multiple flesh-colored papules distributing on the vulva. The coexistence of eyelid syringomas was found in one third of our series (5/15), and four of them also had a family history of extragenital syringomas.

在临床表现上，11位病人有不同程度的痒感，而其中有9人的病灶为多发性肤色丘疹，5位病人同时合并有其他部位的汗管瘤，其中的4位有家族成员也有汗管瘤病灶。

The simulation results of the cylinder-block model were given in the article, consistent with that of Middlemen"s. It was shown that the block part could improve the uniformity of the flow distribution. The analysis of the flow field of some materials with different power-law factor in the die designed by Mckelvey was close to that of Mckelvey"s. It was shown that the flow distribution was uniform in the die that can producesheets with 1200mm in width. During the analysis the flow channel was divided into several parts to get the details about the fluid flow in each area. A conclusion was drawn after analyzing the influence of the die pressure on the flow distribution, that the higher pressure is good for the output and bad for the uniformity of the distribution. Simulation of the die applying the cylindrical main runner showed the fact that when the cylinder replaced the cone the change of uniformity was trivial. The uniformity of the non-block flow channel was so poor that the block in the proper position of the die channel was necessary. The project of the die for the wider sheet was put forth, and the analysis of the fluid flow in the die was shown.

本文模拟了圆柱管缝隙流模型的三维流动场，得到了与Middlemen结论一致的流动均匀性，并通过模拟直观地展示了采用阻尼块可以改善挤出均匀性的现象；分析了多种幂率指数的流体在Mckelvey等人设计的流道模型中的流动分布，得到了与Mckelvey的分析结果接近的压力降和流量偏差；本文建立了1200mm幅宽机头流道的三维有限元模型，并逐个分析各个区域和多个截面的流动分布状况，由此揭示了1200mm幅宽L-型机头流道内的流北京化工大学硕士学位论文动分布基本均匀，并在分析了机头压力对于挤出流动分布的影响后得出结论：较高的机头压力可以获得较大的产量，但是不利于物料均匀分布；模拟了采用圆柱管主流道时机头流道内的流动分布，得出结论：主流道由圆锥管改为圆柱管时对流动均匀性影响不大，通过设置适当的阻尼仍然可以达到挤出平衡；模拟了两端进料式圆柱管无阻尼流道的流动均匀性后得到结论：两端进料式无阻尼结构的流动均匀性较差，宽机头中仍然有必要设置阻尼块；确定宽幅机头流道的基本方案，并设计了一种宽幅防水卷材挤出机头流道的结构，通过流动模拟表明该种结构的流动均匀性较好；考察了宽幅机头对于不同厚度片材的挤出适应性，得到结论：当生产不同厚度的片材时，阻尼块高度需要调整。

Some cell dropped into the cavity and became free. Thrombosis or part organization could be seen. The internal elastic layer became thin, disappear or broken. In internal and middle layer existed fibroblasts, fibrocytes and collagen. Some of the wall indicated hyaline change, soomth muscle cell decreased greatly. The massive inflammatory cells invaded the middle and external layer. There were many foam cells in the capsule tissue. Cytoplasm was filled with fatty tissue and cholesterol. some cavities were full of thrombosis. Some thrombosis was fibrosis, the bottom was organization. The surface of the thrombosis existed red blood cell and librae.(2)Elatic fibrila staining: the internal elastic menbrane almost completely disappeared, the intact internal elastic menbran could be seen in the new small vessels.

动脉瘤管壁厚薄明显不均，全层或局部区域显著变薄向外膨出，内皮细胞空泡变性或坏死脱落，部分内皮细胞剥离并突入管腔成游离状，可见血栓形成及部分血栓机化；内弹力板变薄、消失或突然中断；在内膜及中膜部位主要为纤维母细胞、纤维细胞和大片胶原；部分动脉瘤壁呈均质状玻璃样变，平滑肌细胞明显减少；中膜和外膜可见大量的炎性细胞浸润；瘤壁组织有纤维母细胞、纤维细胞、大片胶原成分及较多泡沫细胞，胞浆内充满脂类物质及胆固醇结晶；部分动脉瘤腔内充满血栓，有的血拴已经纤维化，血栓基部机化，血栓表面有红细胞和纤维素。

The study indicates that Geodrassus diguitusiformis Hu, 2001 should be transferred to the genus Trachelas; Clubiona heteroducta Zhang et Yin, 1998 and Clubiona xiningensis Hu, 2001 are synonymized with Clubiona gongi Zhang et al., 1997 and Clubiona neglecta O.P.

管巢蛛科、圆颚蛛科、光盔蛛科(圆颚蛛和光盔蛛以前是管巢蛛的一部分，后被分出)目前全球分别已知15属527种、75属831种和32属239种；中国以往记述分别为1属78种(另有3疑问种)、7属18种(另有3疑问种)、和4属19种。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。