三两个...

An image conic can be the projection of either a planar conic or silhouette of a conicoid. We show that at least three images, taken from the same position with different camera orientations, of two planar conics, or two conicoids, or one conic and one conicoid, are needed for the calibration, and a closed-form solution can be obtained. Our new conic based calibration technique requires no knowledge of camera's orientations, and relies solely on image correspondences.

在不同的方位拍摄三幅或三幅以上图像，每幅图像至少包含两个空间平面二次曲线、或两个二次曲面、或一个平面二次曲线与一个二次曲面的投影，利用图像之间的二次曲线对应关系，可以确定摄像机的内参数矩阵，同时可以获得摄像机不同方位之间的旋转矩阵。

At the normal state, porphyrin molecules do not have EPR signal. However, light excitation may cause a transition of porphyrin molecules from singlet to triplet. At the same time, the change from diamagnetism to paramagnetism occurred to porphyrin molecules. In this case, the two un-paired electrons are nearby each other and cause a strong interaction, giving EPH signal with sharp peak at g = 2.000. The g value increased with an increase in electron cloud density.

常态下卟啉分子没有EPR信号，在光的激发下，卟啉分子由原来的逆磁性分子变成顺磁性的激发三重态分子，这种激发三重态分子在分子轨道上具有两个未成对电子，这两个电子相距很近，彼此之间发生很强的相互作用而产生电子，它的g值随卟啉共轭体系平均电子云密度增大而变大。

I read Wang Ming's "50 Year of CCP" recently, it's maybe a forbidden book about abusing Chairman Mao and distorting Party history, but Wang has a beautiful pen and learn theory very well, after I finished the book I have two achievements, first is knowing that Wang has living to the ending of Culture Revolution and he had also take big position after PRC was established. Second is I understand the major convergence between Mao and Wang is whether Maxism can be Chinalized, Wang conclude Maoism is total Personal Adorement, to think peacefully it's reasonable, and after Mao there are "2 If, 3 Representer, Cat and 2 Must" Theories, but Wang's flatory to USSR was also unacceptful, all in all Stalin also advocate Personal Adorement movement.

最近还看了王明的《中共50年》，这可能算一本禁书吧，是骂毛主席歪曲党史的，不过王的文才不错，理论学的也好，看完两个收获，第一是知道了王竟然一直活到文革快结束时，建国后还当过不小的官，第二是理解了王和毛的主要分歧是马列主义能不能中国化的问题，王是极力反对毛泽东思想和马列中国化的提法，认为是极端的个人崇拜，平心而论有些道理，而在毛之后"两个凡是、三个代表、猫论、两个务必"都陆续出台，但王对苏联的极力美化也是存在问题的，毕竟搞个人崇拜搞得凶的是斯大林。

Of his six outs, two came in the air, two came on the ground, and two came via the strikeout.

六个出局数中，两个在空中，两个是滚地，而另外两个是三振。

The invention concerns an artificial block comprising a central core (1) having first (11) and second (12) opposite surfaces each provided with an anvil-shaped side leg (21, 22) with a table (21A, 22A), two sloping sides (21E, 21G; 22E, 22G) and two side surfaces (21B, 21C; 22B, 22C), the tables of said side legs being arranged parallel to said first and second opposite surfaces of the core, the inclined sides of said side legs resting on third (13) and fourth (14) exposed opposite surfaces of said core, said core having fifth (15) and sixth (16) surfaces each provided with side legs and front legs shaped like a truncated pyramid with four side surfaces and one front surface (33) parallel to said fifth and sixth surfaces of the core and to the side surfaces of the side legs.

一种保护层块料，包括一个中心核体(1)，有相对的第一面(11)及第二面(12)，每一面上各有一个砧状侧凸起(21，22)，这两个侧凸起各有一个台面(21A；22A)、两个斜面(21E，21G；22E，22G)和两个侧面(21B，21C；22B，22C)，所述台面相互平行，而且平行于所述中心核体的相对的第一面及第二面，所述侧凸起的斜面支撑于所述核体的相对的可见的第三(13)和第四面(14)。所述核体还有相对的第五(15)和第六面(16)，其上各有一个锥台状的前凸起，该前凸起有四个侧面和一个前表面(33)，该前表面平行于所述核体的第五和第六面，还平行于侧凸起的侧面。

Primarily, the thesis assays the condition of network framework, the network was divided into three levels in terms of network management in order to establish the distributed method ,and still pointing out the intention and denotation of studying the Topology Discovery.Next, the thesis analyzes SNMP protocol minutely, including its development, principle, and the Network Management system that established on the SNMP protocol. Have analysed MIB in detail and the application way of MIB in network management .The thesis also assays the ICMP protocol, describing its working principle and the format of datagram minutely , and describing two important tools of ICMP- Ping and TraceRoute in detail. On the base of upper analysis, the thesis expounds a kind of distributed Topology Discovery project, and book it in one autonomy system. Topology Discovery was divided into two levels in terms of network management, and analyses the way of linking up between the two level. The thesis minutely assays Router-Level Topology Discovery technology basing on SNMP and Subnet-Level Topology Discovery technology basing on ARP and ICMP. According to these analyses, the thesis explores the specific methodology and the technology of XML data object which using the WinSNMP API to achieve topology discovering system on the development platform of Visual C++, and also analyses the technology of topology analysis and topology graph minutely. Moreover, the thesis assays the technology of basic firewall and Topology Discovery response strategy. Finally, the thesis analyses the underlying blind problem of the topology finding, and also analyses the reason that the blind problem produced and the way that reduced. The distributed algorithm that this paper puts forward has a certain directive significance in wireless network or other fields.

本文首先分析了网络结构状况，将网络从网络管理的角度划分为三个层次，为分布式的方法奠定了基础，同时还指出拓扑发现研究的目的及意义；接着本文分析了SNMP协议，详细分析了SNMP协议的发展状况，协议的工作原理，以及由SNMP协议基础上建立的SNMP网络管理体系，详细分析了MIB，以及MIB在网络管理上的应用方式；本文又分析了ICMP协议，详细描述了ICMP的工作原理和数据报格式，并详细描述了ICMP的两个重要工具-Ping 和TraceRoute；然后本文在结合上述分析的基础上，提出了一种分布式的拓扑发现方案，将拓扑发现拟订在一个自治系统内，将拓扑发现从网络管理角度划分为路由器级和子网级两个层次，分析了两个层次之间的衔接方式，同时从拓扑地域的角度将拓扑发现过程分布化，分析了分布式算法的具体方法和分布式结点之间的数据通讯方法，本文详细分析了基于SNMP的路由器级拓扑发现技术和基于ARP和ICMP的子网级拓扑发现技术；根据这些分析，本文利用XML数据对象作为分布式算法中的数据对象，分析了XML的技术，本文使用Visual C++开发平台实现网络拓扑发现系统，详细分析了使用WinSNMP API实现基于SNMP的路由器级拓扑发现和基于ARP的子网级拓扑发现，分析了使用Winsock编程实现基于ICMP的子网级拓扑发现，本文还对拓扑分析和拓扑图的绘制技术作了较细致的分析；本文最后还分析了基本防火墙技术，分析了几种类型的防火墙对拓扑发现带来的影响，以及在拓扑发现时的应对策略，本文还分析了拓扑发现中可能产生的盲点问题，分析了盲点产生的原因以及拓扑发现中减少盲点的方法。

Degaussed resistance is generally rectangular black phenolic resin, there are two or three pins, there are one or two thermal resistance, thermal resistance and some form of sheet is yellow body, two primers feet, like a large round high-voltage ceramic capacitors.

消磁电阻一般是黑色的长方体酚醛树脂，有两个或三个引脚，里面有一个或两个热敏电阻，有的热敏电阻外形是黄色的片状体，有两个引脚，就像一个大的圆形高压瓷片电容。

Moreover, A hybrid algorithm, ALHybrid, which is made of the algorithm LIDBSO and the algorithm AprioriIpv, is designed. Two algorithm, MQC_Apriori and MQC_LIDBSO, are given to mining multiple level quantitative association rules with item constrains. Two algorithm, PMARⅡ and PMARⅢ, which are based on different sequential mining algorithms, are given for parallelling mining association rules. In order to solve the mining association rules problem when we add a set of data to a database or delete a set of data from a database, two incremental updating algorithm, EUAR and EUAR, are given. Three incremental updating algorithm for association rules mining, DIUAⅠ, DIUAⅡ and DIUAⅢ, are dedigned to solve the three kinds of association rules incremental updating problem in distributed databases.

另外，文中还设计了一个算法LIDBSO与算法AprioriIpv相结合的混合采掘算法ALHybrid；对于多层次、带约束、多值属性关联规则的采掘问题，给出了两个采掘算法：算法MQC_Apriori和算法MQC_LIDBSO；在关联规则的并行采掘方面，还设计了两个基于不同顺序关联规则采掘算法的并行算法：算法PMARⅡ和算法PMARⅢ；在关联规则的增量式更新问题上，还给出了两个改进算法：算法EUAR和算法EUARˉ，分别用于解决当数据库增加或删除一个数据集合时的关联规则增量式更新问题；针对分布式数据库中的关联规则增量式更新的三类问题，提出了三个增量式更新算法：算法DIUA Ⅰ、算法DIUAⅡ和算法DIUAⅢ。

The meanings of the three dimensions have been richened. Now, the effectiveness dimension includes both accounting measures and market measures; the efficiency dimension includes both outcomes and processes; and the synergy dimension consists of the synergy of both short-term and long-term interests of stakeholders.

全息绩效概念正是在这种演进的历史中，丰富了它固有的三个维度的延伸内涵，即，效益维度包括会计基础业绩和市场基础业绩两个方面；效率维度包括结果效率和过程效率两个方面；协同维度包括长短期利益协同和相关者利益协同两个方面。

Hernandez started with two batters, two grounders, two outs; then, too long to get a third out.

Hernandez一开始就让两个打者，两个都是滚地球，两个出局数到手；但可惜第三个来的太迟。； V4 b I- x6 H9 A

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。