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In the design of automatic control system for isomerization unit from heptane tower of PX devices, single-loop control is used in the control programme. There is a total of 11 circuit , of which is 8 single-loop control system and 3 cascade control system. It has done the choice and relevant calculation on the controller, control valves and measurement devices used in the control system. There is a total of eight chapters in this design.

在对PX装置异构化单元脱庚烷塔自动控制系统进行设计时，控制方案基本采用单回路控制，总共有11个设计回路，其中单回路控制系统8个，串级控制系统3个，并对控制系统所要用到的控制器，控制阀和测量元件等进行了选择且进行了相关的计算。

Paul Erds once posed the following problem about real line R: is it true that, for every infinite set X, there is a closed set E with positive lebesgue measure such that E doesn't contain any subset similar to X (I.e., there is no subset of E, which is a linear homeomorphic image of X). In 1984, K. J. Falconer proved the following: for a decreasing sequence of positive numbers {xn} such that \%lim\%xn=0 and \%lim\%(xn+1)/=1, Erds problem has a partial positive answer.

叶盛 Paul Erds曾提出如下关于实直线R的问题：是否对R的每一个无限子集X，都存在一个具有正测度的闭子集E，使得E的任何子集都不相似于X(E的任何子集都不与X线性同胚)。1984年，Falconer证明了如下结论：对于一个满足limxn=0和lim(xn+1)/=1的单调递减的正实数列{x n}，Erds问题有一个部分肯定的解答。

On the basis of an analysis of the present profile of automobile consumer credit in China,a discussion is done on the meaning of its development. This thesis introduces the development of the market of automobile consumer credit overseas, and finds out the reasons why overseas automobile consumer credit leads to the successful development of automobile industry. It also analyses the causes of the slump in the market of automobile consumer credit in the country in aspects of influential elements such as economy,policies,society,consumption norms and so on. It has a deep discussion on some obvious problems in this field. For example,the market of automobile consumer credit is of no scale; the prices of automobiles are high; taxes are heavy and expenses are too much; average residents still have low income and no definite balance between income and predicted expenses; there is no perfect social credit system and individual credit system; there is not enough awareness of credit among the public. Taking theories in the area of industrial economics into consideration,it proposes basic measures of promoting the development of consumer credit in China: building up a credited society,a perfect and sound personal credit system.With credit database as the platform,all parties will be able to share information,improve the credit database,relevant regulations and laws as well as a risk warning system,thus operation and management of the operating entities will be improved,the cost of the practice of consumer credit will be reduced; strengthen the innovation of present financial system,develop financial products corresponding to different groups of customers,improve services,perfect the mode of "bank+insurance+automobile agents",make full use of the interne,adopt the practice of turning credit into securities.

本文在我国现阶段汽车消费信贷现状分析的基础上，对大力发展汽车消费信贷的意义进行了讨论；通过分析国外汽车消费信贷市场的发展概况，解析出国外汽车消费信贷促进汽车产业发展成功的原因；从影响汽车消费信贷市场发展的有关因素如经济环境、政策环境、社会环境和消费习惯等方面分析了我国汽车消费信贷市场现状低迷的症结所在；对中国汽车消费信贷市场的一些明显问题，如汽车消费市场尚未形成规模，汽车价格偏高，税费和使用费用负担沉重，相对较低的居民收入与预期收支不确定，社会信用体系尚未建立，个人信用制度缺失，公众信用意识淡薄等方面进行了深入探讨；立足于产业经济学理论，提出了构建信用社会，建立健全和完善个人信用体系，建立个人资信评估机构和登记制度，引入专业的资信中介机构，以信用数据库平台为基础，各方共享资源，组建客户信用数据平台，完善法规制度建设，建立健全汽车信贷消费的法律体系，建立风险预警机制，提高汽车消费信贷经营主体的经营管理水平，降低汽车信贷业务成本，加大金融制度创新的力度，开发适合不同消费群体的金融产品，提高服务质量，完善"银行+保险+汽车经销商"的汽车信贷模式，充分利用互联网、实行贷款证券化等促进我国汽车消费信贷发展的基本措施。

Conspiracy theories have two types of sources. One is secular; liberalist political science is highly skeptical of human nature and state power. Where there is power, there is conspiracy.

阴谋论来自两种背景，一个是世俗的，自由主义的政治学对人性和国家权力怀有一种深度的怀疑，哪里有权力哪里就有阴谋。

It is directly related to the development and exist of the enterprise. Seen from the dog-eat-dog market and the states of the coal enterprise. It is a logjam way to improve the price and increase the output of coal, but there is only way to improve the economical efficiently of coal through controlling the cost. But, on controlling of the cost, there is a great limitation in traditional product-centered cost calculation system.

从激烈的市场和煤炭企业自身的情况看，煤炭企业提高价格和提高产量的方法是行不通的，只有通过内部自身进行有效的控制成本才是提高煤炭企业经济利益的根本途径，而在控制成本方面，传统的以"产品"为中心的成本核算体系存在很大的局限性。

Because my eyes is the dark sea is muddy, there is no anger, there is no self-confidence.

因为我眼前的大海是灰暗的，是浑浊的，是没有生气的，是没有自信的。

There is no national science just as there is no national multiplication table;what is national is no longer science.

科学 没有什么民族科学，就象没有什么民族的乘法口诀一样----科学一民族，就不再是科学。

We are gonna do many for cuts because we have to,but the only way you are gonna get a treaty that is passible in United States Senate,is going to have global participation,all countries will have to do something,we can define diffirent rates ,diffirent levels, diffirent layers ,but it's gotta be measurable,reportable,and verifiable,and in the end there is got to be real actions that other countries are taking,so that no one is feeling they are doing things,but some other countries out there undoing everything they are doing.

偶们会采取很多措施来减少气体排放量，因为偶们必须这样做。但是唯一能使该协议通过美国参议院的方法就是全球参与，所有的国家都采取行动。偶们可以定义不同的比率，不同的水平，不同的层次，但是必须是可测量，可报告，可证实的。最后，其他国家必须采取实际行动，这样才不会使有点国家认为他们采取了行动而有些国家却什么都没有做。

Base on above studies, some conclusions were obtained as follows:(1) ore-forming background of the studied ferromanganese crusts are mainly controlled by intensity of Antarctic Bottom Waters and variations of material source;(2) it is confirmed that the ferromanganese crusts are mainly hydrogenetic and their composition are affected by volcanic and continental material simultaneously; there are no obvious phosphatization reconstruction and element reaction occurred in them, so they have important paleoceanological significance;(3) from researches on element occurrence modes in the new-type ferromanganese crusts and the lying sediments, it is proposed that there is no great biological affection on the crusts formation and their composition mainly came from the adsorptive action of the ferromanganese oxides in them;(4) two major types of ore-controlling factors are identified through compilation of ore-controlling factors, which are geological and oceanic factors;(5) considering the long-term variation trends of the crusts composition, combing the U-series and 10Be isotope dating results, it is proposed that the ore-forming processes of ferromanganese crusts in the studied areas can be divided into three major stages (5.6~2.8 Ma, 2.8~2.7 Ma and since 2.7 Ma), and then the activities of AABW since the Late Miocene, changes of input flux coming from volcanic and continental material are confirmed.

通过研究，得出如下结论：(1)研究区铁锰结壳的成矿背景主要受控于南极底流强弱及物源供给的变化；(2)证实铁锰结壳主要为水成成因，同时其物质组成也受一定程度的火山和陆源物质的影响；结壳自形成以来没有遭受到明显的磷酸盐化等成岩后期改造和元素再迁移，具有重要的古海洋学意义；(3)通过新型铁锰结壳及下伏沉积物元素赋存状态的研究，认为生物作用对研究区结壳的形成并没有很大的直接影响，其物质成分主要来自于结壳中铁锰氧化物的吸附作用；(4)在控矿要素的研究中，归纳出了地质与海洋两大类结壳控矿要素；(5)根据结壳成分长周期变化趋势，结合铀系和10Be测年结果，将研究区结壳的形成过程划分为三个主要阶段(5.6~2.8 Ma，2.8~2.7 Ma和2.7 Ma以来)，并确定了晚中新世以来研究区南极底流的活动情况、火山和大陆来源物质输入量的变化。

The original symmetry point and have seriously deviated from, if you want to make a balance between the development of the city, there are two approaches, one is the original economic development of backward areas, for example, to Nancheng huge investment, it's rapid economic growth; also There is a way to move the center to make it balance, if it is still definitely in line for Chang'an Street, Beijing should not balance the development is therefore imperative to the city centers to China.

原来的对称点和已经严重偏离，如果您想之间的平衡发展的城市，有两个办法，一个是原来的经济发展落后地区，例如，南城巨额投资，经济的快速发展增长；也有一种方法可以移动中心，使之平衡，如果它仍然是绝对排在长安街，北京不应该平衡发展，因此必须在城市中心，中国。

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。