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This paper introduces the research results of techniques of testing PC pump oil well through one-year efforts. Which covers the mathematical models of a number of force characteristics strength analysis, and resonance critical problems of rotation rod-string in PC pump wells: resulting of testing method of polish-rod load and rotation rate on the basis of feasible demonstration and technical requirement analysis; study and manufacture of system of testing PC pump well, which involves sensor, collector ring, acquisition circuit and computer; research and determination of assistant technology of testing force on rotation polish-rod and formulation of testing force on polish-rod. A spot testing has been carried out by means of the above research fruit and good results have been achieved.The success testing results in has laid a strong foundation for the oil well diagnosis.

本论文介绍了对螺杆泵采油井的研究成果，其内容包括，对螺杆泵采油井中的旋转杆柱的若干受力特征、强度分析方法及共振临界问题进行数学建模；在可行性论证和技术需求分析的基础上，研究产生了对油井进行光杆负载和旋转速度测试的办法；研究制作了螺杆泵采油井测试系统，它包括传感器、集流环、采集电路和计算机等；研究确定了对实施旋转光杆测力的辅助工艺；制定了对光杆受力进行测试作法，利用以上研究成果实施了现场测试，并取得了理想的结果。

Based on the researches mentioned above, choosing 18 typical indices, which on behalf of the natural-human pressure (6), ecological states (8), and responses of the human and society (4), using analytic hierarchy process, the author established an estimate system of regional ecological security, worked out a half quantitative compound index number of regional ecological security in Lazi County.

在以上研究的基础上，选取代表自然和人文压力(6个)、生态系统状态(8)和人文社会响应(4个)的共18个典型指标，利用层次分析法建立区域生态安全状况评价体系，半定量计算出拉孜县区域生态安全综合指数。

Additional, the basis is newest those who announce 2008 " findings report of Chinese game industry ", number of user of Chinese network game also did not pass trifling 2008 49.36 million (this report is definition of network game user play network game) every months at least in a year, the measure of home of minor net amuse oneself that a week left and right sides that still reports according to teenage service center computation goes out not as good as enjoys.

另外，根据最新公布的2008年《中国游戏产业调查报告》，2008年中国网络游戏用户总数也不过区区4936万(该报告将网络游戏用户定义为在一年中每月至少玩一次网络游戏)，还不及根据青少年服务中心报告计算出的一周左右玩一次的未成年网游玩家数量。

The optimization methods of database SQL query were studied and some available query optimization Methods were given out as follows: The incompatible data type should avoid to be used; More redundancy search parameters should be given as join condition in join query; In some condition, the number of note hitted to target was estimated by optimizing implement using the average density; Some other maths operating symbol should avoid to be used as condition parameters in WHERE clause; Some operating symbol and its sentence should avoid to be used also; When the cluster function was used,the WHERE clause should be paied attention to more,and so on.

作者单位：（重庆工学院商贸信息学院，重庆 400050）摘要：数据库SQL查询语句的优化，须注意：避免使用不兼容数据类型；连接查询中应多给连接条件提供一些冗余的搜索参数；某种条件下优化器只能使用其平均密度以估计命中的记录数；避免对WHERE子句中条件参数使用其它数学操作符；避免使用某些操作符及相应语句；聚簇函数的使用应注意WHERE子句。

Among them 3 kinds of pattern are more familiar, it is mode of forum public relations, the small number of people gives out gigantic voice through occupying the platform such as forum, BBS by force, flooded popular true sound; 2 it is the network shoves a hand, prove through plan and lack but the operation with apparent directivity, the purpose; that achieves attack competitor or information to distribute searchs engine the 3rd kind namely, the search engine that holds market dominant position often screen inimical or the website that does not pay, put the content that with oneself interest positive closes in search result front row, one when intervene the practice that searchs a result made industry goes regular.

其中三种模式比较常见，一是论坛公关模式，少数人通过霸占论坛、BBS等平台发出巨大的声音，淹没了大众的真正声音；二是网络推手，通过策划以及缺乏论证但是指向性明显的操作，达到攻击竞争对手或信息散布的目的；第三种就是搜索引擎，占据市场优势的搜索引擎往往屏蔽不友善或不付钱的网站，并将与自己利益正相关的内容放在搜索结果前列，干预搜索结果的做法成为了业界的一条潜规则。

The switching law is given out according to convex combination condition and the sufficient condition of the stabilization is obtained by switching among a finite number of controllers under the assumption that a single controller cannot make the systems stable and has H-infinity disturbance attenuation.

在假定每个单一的控制器均不能使系统稳定且具有H扰动衰减度的条件下，利用凸组合条件给出了切换律的设计方案，通过在有限个控制器间的切换得到了镇定的充分条件。

The influence of position of the substitution, strength and number of donors and acceptors, and their coplanarity and asymmetry is discussed. The results indicate that the molecules may have larger first hyperpolarizabilities when the molecules have stronger and more donors and acceptors, large asymmetry of HOMO and LUMO, better coplanarity and higher accentricity. This work attemps at finding out the relationship between the structure and the property, thus providing theoretical basis for designing nonlinear optical molecules.

进一步研究体系中取代基的位置，给体与受体的数量和得失电子的能力，分子的共面性和对称性对分子第一超极化率的影响，结果表明，有机分子拥有更多数量与更强得失电子能力的给体和受体，最高占据分子轨道和最低未占据分子轨道空间分布的不对称，具有较高的原子共面性和较低的分子中心对称性，都能显著增加

And starting from the inertia of the large number of text introduced by centrifugal force and the Coriolis force, and through the two of the more powerful and proven set out to explain the inertia force, the inertia of the process of doing a detailed description, And applying the theory with practical ways of his predecessors found that the real issue in the application and preliminary feasibility studies, for the simple inertia force for a definition and description.

并且又从惯性力出发用大量文字来介绍惯性离心力和科里奥利力，并通过对这两种力的阐述和证明更有力的来说明惯性力，对惯性力提出的过程做了详细的叙述，并运用理论结合实际的方法对前人发现的问题进行实际中的应用和初步论证，简单得对惯性力进行个定义和说明。

The above remarks, if only for "real estate corporation" of the act itself, regardless of whether those who support or opposition, each side can be set out in a large number of reasons, and those reasons no one can say It is completely unreasonable.

上述表示的，如果只为"房地产公司"的行为本身，无论是谁支持或反对，双方都可以设置了大量的理由，这些理由没有人可以说这是完全不合理的。

A method for carrying out transparent transmission service of elastic packet ring includes setting station table and interface table in RPR station of EPR, finalizing top ring retransmitting process based on MPLS countermark by matching MPLS countermark in service frame to station table to obtain MAC address of correlated EPR station according to topological retransmission table of station, finalizing bottom ring process based on MPLS countermark by matching MPLS countermark in service frame to interface table to obtain correlated local Ethernet interface number.

本发明公开了一种弹性分组环透传业务的方法及装置，方法包括：在每一个弹性分组环RPR站点中，建立一张具有MPLS标签与弹性分组环站点关联关系的站点表以及一张具有MPLS标签与本地以太网接口关联关系的接口表；通过将业务帧中的MPLS标签与所述站点表进行匹配获得关联的弹性分组环站点的MAC地址，并根据站点的拓扑转发表，完成基于MPLS标签的上环转发处理；通过将业务帧中的MPLS标签与所述接口表进行匹配获得关联的本地以太网接口号，完成基于MPLS标签的下环处理。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。