等比

The plug energy dissipater is applied to eliminate the bubbles taken place to the outflow of power plant cooling water. The hydraulic characteristics of the dissipater are studied both by model test and numerical simulation based on k-ε two-equation turbulence model.

从电厂排水口消能消泡消盐雾的机理出发，以模型试验和数值模拟等研究手段探讨了洞塞式消能工的流场和压力场等基本水力特性，获取了面积比0.4~0.8，相对长度比0.5~2.0的多种洞塞的局部阻力损失系数，并为工程应用提供了计算的经验公式。

The intensity of pressure is the most markable factor that influence the casts mechanical properties and microstructure. When its value exceeds 40MPa, the disfigurement such as shrinkage porosity can be effectively reduced . when its value exceeds 120MPa, the pressure obviously influence the crystal performances of liquid metal also, and compact homogeneous exiguous equiaxial crystal can be obtained. Pressure can also increase the solubility of Cu in a -Al.

比压是对铸件力学性能和显微组织最为显著的因素，其取值超过40MPa时，能有效减少缩松等缺陷，当比压超过120MPa时，除了能减轻铸造缺陷外，还对液态金属的结晶性能产生显著影响，在铸件断面上得到致密、细小且均匀的等轴晶。

The kinetic behaviors of ethylene homo- olymerization and ethylene / l-hexene co-polymerization , catalyzed by the metallocene catalyst PS-DVB-MC in an 0.5 L stainless steel reactor , were studied. The effects of polymerization conditions on ethylene polymerization , such as concentration of catalyst , temperature of polymerization , pressure of ethylene , molar ratio of AI / Z r , etc ., were also investigated . Some leading results were as follows : the activity of the catalyst PS–DVB- MC for ethylene homo-polymerization was high ( 1.053 x 107 gPE / mol Zr·h ), but the molar ratio of AI / Zr was low ( 350:1 ); the catalytic ability for ethyleneα-olefin ( such as l hexene etc .) co-olymerization was great , and the corresponding activity come up to a maximum of 1.753 x 107 gPE / mol Zr·h while concenlration of l-hexene was 0.080 mol / L ; the molecular weight of polyethylene was about 180,000 , meanwhile the molecular weight distribution was narrow ( 2.19 ); the bulk density of polyethylene and ethylene / l-hexene co -polymer were 0.25 and 0.34 respectively .

采用0.5L高压不锈钢反应釜，对催化剂PS–DVB-MC催化乙烯均聚和乙烯/ l-己烯共聚合的动力学行为进行了研究，详细考察了催化剂浓度、反应温度、压力、Al/ Zr比、1-己烯浓度等因素对乙烯聚合反应的影响，得到如下主要结论：催化剂PS-DVB-MC具有催化乙烯均聚的高活性(1.053×107g PE / mo1 zr.hr)，低Al / Zr比( 350：1 )；具有良好的催化乙烯与α-烯烃(如1-己烯等)共聚的能力，在1-己烯浓度为0.080 mol / L时，催化活性达到最大(1.783×107 g PE / molZr.hr)；乙烯均聚产物的分子量在18万左右，分子量分布窄( 2.19 )。

The feldspars of topaz-lepidolite granite in Yashan late stage are P-rich albite and Kfeldspar, and the phosphorus goes into feldspar structure in the form of PAlSi〓 substitution. The phosphorus contents of feldspars vary according to their crystal habitus. In general, the feldspars of later generation have the higher average phosphorus content than that of earlier generation, and the albite contains higher phosphorus than the K-feldspar in the same generation. The zircon is highly rich in Hf, U, P and Al. The phosphorus enters the zircon structure mainly by the form of〓P〓〓Si〓, Al〓P〓Si〓 or P〓Al〓Si〓, Zr〓 substitution. The P-rich zircon is the production of the highly evolved magma, and it might be one of the important characteristic minerals of the high-P subtype granite. The manganocolumbite, manganotantalite, wodginite and titanowodginite are the main niobium and tantalum minerals.

雅山晚阶段黄玉锂云母花岗岩的长石矿物是富磷长石，磷以PAlSi〓替换方式进入长石结构中，并且在长石中的分布很不均一，一般是晚结晶的长石比早结晶的长石的磷含量高，同期结晶的钠长石比钾长石的磷含量高；锆石矿物为高度富铪、铀、磷和铝的锆石，磷主要以(Y， HREE， Fe)〓P〓〓〓Si〓〓、Al〓P〓Si〓〓、P〓Al〓Si〓〓Zr〓〓等替换方式进入锆石晶格中，富磷锆石是岩浆高度演化的结果，是高磷花岗岩的特征矿物之一；雅山含有丰富的磷锂铝石，是高磷花岗岩的主要磷酸盐矿物；铌—钽矿物主要有铌锰矿—钽锰矿、锡锰钽矿—钛锰钽矿、细晶石等。

My thesis is divided into three chapters: In the first chapter, I mainly present the excavations of Oxyrhynchus, the discovery of the Hellenica Oxyrhynchia, the author, the organization, the style and the vocabulary of the Hellenica Oxyrhynchia as well as the time of writing and the scope of the content.In the second chapter, I mainly analyze the war at Ephesus, Megara and Notium recorded in the Cairo Fragment and Florence Fragment and compare them with other historian\'s records.In the third chapter, I analyze the contents of London Fragment item by item and compare the parallel records with the other historian\'s. I mainly discuss the prosperity of Thebes and the fall of Athens in the Peloponnesian War, the constitution of Boeotia, the recovery of Athens after the Peloponnesian War, the consolidation of Spartan hegemony, the Corinthian War, the democratic revolution of Rhodes, the relationship between Persia and the Greek City States, the political conflict inside the Greek City States, etc.

本文共分为三章：在第一章中，笔者主要探讨了奥克西林库斯的考古发掘、《奥克西林库斯希腊志》的发掘出土及其作者、体例、语言和风格、创作时间以及记载的内容；在第二章中，主要对《奥克西林库斯希腊志》的开罗断片与佛罗伦萨断片所记载的以弗所战役、麦加拉战役和诺丁姆战役进行了史料分析和文献比对；在第三章中，笔者对伦敦断片所记内容进行逐条分析并与其他史家的记述进行了文献比对，其中主要探讨了伯罗奔尼撒战争中雅典的衰落与底比斯的繁荣、比奥提亚的联盟体制、伯罗奔尼撒战争之后雅典的复兴、斯巴达霸权的巩固、科林斯战争、罗德斯民主政变、波斯与希腊城邦的关系以及希腊城邦内部的党派斗争等内容。

The invention relates to a dynamic matrix control system of high-purity distillation, which comprises distillation tower, intelligent checker, DCS system, superior host, and on-site bus, while they are connected. The control system uses tower product group as the object variable, and the reflux ratio and reboil ratio as control variable; the superior receives history temperature and pressure data from the DCS real-time database, via the predict control and dynamic matrix controller, to obtain the output values of present controller as reflux ratio and reboil ratio, then feedback said two values to DCS system, to function the distillation object. The invention can confirm the high-purity stable operation, with better dynamical control.

本发明公开了一种高纯精馏的动态矩阵控制系统和方法；系统包括：精馏塔、智能检测仪表、DCS系统、上位机和现场总线；所述精馏塔、智能检测仪表、DCS系统和上位机通过现场总线依次相连，实现信息流的上传和下达；本发明所涉及的控制系统采用塔双端产品组分为被控变量，回流比和再沸比为对应的控制变量；上位机从DCS实时数据库中获得历史的温度、压力等数据，通过推断控制环节和动态矩阵控制器环节，得到当前控制器的输出值-回流比和再沸比，再把控制器输出值返回给DCS系统，实现了对高纯精馏过程的双端产品高纯控制，对双端组分的高纯度平稳操作，具有很好的动态品质和控制效果。

This dissertation successfully fabricated cross-linked polysiloxanes under base catalysts such as potassium hydroxide siloxanolate or tetramethylammonium hydroxide (Me_4NOH) siloxanolate by anionic ring-opening copolymerization of cyclosiloxanes and Polyhedral Oligomeric Silsesquioxanes as multifunctional monomers.

本论文首次通过阴离子开环共聚，成功地将POSS大分子作为多官能团单体，与环硅氧烷在KOH硅醇盐或Me_4NOH硅醇盐等碱性催化剂的作用下，直接合成交联聚硅氧烷：通过调节POSS大分子和环硅氧烷单体的种类以及化学计量比，可合成出一系列不同种类和不同交联密度的交联聚硅氧烷；并对其阴离子开环共聚机理以及极性调节剂DMAc对凝胶时间的影响进行了详细讨论；同时借以凝胶含量和溶胀比、GPC、FT-IR、固体~(13)C和~(29)Si NMR、WAXD、DSC以及TG等手段对所得聚合物的微观结构以及热性能进行了详细考察。

Through analysis of variance, the best mass ratio of different coating material matching is found out: It is the best matching when the mass ratioof red clay membrane urea is 5:7,which can lengthen the eluviationing time for 11 days, reduce the nitrogen eluviationing loss by 16.12%; the amount of the clay quality has no use to lengthen the eluviationing time and the result is not obvious; when the quality ratio of urea and gypsum is 5:8,it can lengthen the eluviationing time for 8 days, reduce the nitrogen eluviationing loss by 23.86%;when the quality ratio of urea and gypsum is 5:7,it can lengthen the eluviationing time for 30 days, reduce the nitrogen eluviationing loss by 16.58% when the contrast urea N is all eluviated out ; it is the optimum matching association; When the quality ratio of the urea and the sulfur is 5:6, which is a optimum proportion ,it can l

根据对淋溶时间、经济成本等的对比，经过方差分析，找出了不同包裹材料的最佳质量比的搭配组合：红胶泥包膜尿素的质量比是5：7时最好，可以延长淋溶时间11天，减少氮素淋溶损失16.12%；粘土质量的多少对延长尿素的释放时间作用不大，效果不明显；石膏和尿素两者的最佳质量比是5：8时，可以延长淋溶时间8天，减少23.86%的氮素淋溶损失；硼砂和尿素的质量比是5：7可以延长淋溶时间30天，当对照尿素N素全部淋出时，减少16.58%的氮素淋出，是最优

In different climate zones in China,analyses the annual energy consumption of an all-air air conditioning system under four operating modes,using fresh air ratio regulations only,using enthalpy recovery wheels only,using both of them and using none of them.

选取哈尔滨、北京、上海等5个建筑气候分区的代表城市，以同一办公建筑为例，分析全空气空调系统在未采用新风比调节及全热转轮热回收装置、仅采用新风比调节、仅采用全热转轮热回收装置和同时采用全热转轮热回收装置和新风比调节四种情况下的全年能耗差异，探讨适合不同地区节能建筑的全热转轮热回收装置和新风比调节的应用方式。

Through the research of this paper, a conclusion can be drew: NaCl treatment raise the NH4＋-N removal ratio obviously by 18%, and is better than treating by heating, H2SO4, HCl and NaOH. The most reasonable concentration of NaCl is 0.8~1.0mol/L considering technical, economic and other factors synthetically; The best conditions of NaCl modifying is as follows : temperature 70~75℃, time 2.5hours, granularity ＜120mesh, volume/mass 25ml/g; As additive forming pores, activate carbon powder is a little better than charcoal powder, but the effect of both is much better than sawdust.

通过本论文的研究得出以下结论：NaCl改性能明显提高沸石对氨氮的去除效率，氨氮去除率提高了18%以上，其改性效果优于加热、H2SO4、HCl、NaOH等处理方法，综合考虑技术经济等因素的影响，取0.8～1.0mol/L为最合理的改性浓度；NaCl改性的最佳条件如下：温度70～75℃，时间2.5h，沸石粒径＜120目，体积质量比25ml/g；作为微孔沸石的造孔剂，活性炭粉略优于木炭粉，但二者的效果均比木屑好得多。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。