查询词典 ECT

In this paper, we study a class of inverse M-matrices and inverse Z-matrices of tree structure, which have much value in application and theory and matrices associated with the original matrices, for exmple Schur complements, Perron complements, ect.

第二章主要研究一类树结构逆M、逆Z矩阵，图的理论和方法被应用于矩阵结构和性质的研究，图的理论和矩阵理论有着密切的关系，并且图理论用于矩阵的研究有着直观、简洁的特点，二者的研究具有互补的关系，用图的理论和方法研究矩阵一直是矩阵理论研究的一个重要方向。

The direction of research mainly aim at their application in the field of photoluminescence and electro-luminescence, ect.

研究的方向主要集中于它们在光致发光和电致发光等方面的应用。

Network has affected the polity, economy, culture, military and each asp ect of social life.

网络已经影响到社会的政治、经济、文化、军事和社会生活各个方面。

Based on parametric primitive libraries, the function of sequential automatic assembly is implemented. Combined VC++6.0 with UG/Open API functions, UG/Open UIStyler, UG/Open MenuScript ect., the automatic modeling and virtual assembly systemfor parallel mechanisms integrated into UG NX2.0 is developed.

结合VC++6.0开发环境，运用UG/Open API函数及UG/Open UIStyler、UG/Open MenuScript等工具，实现了并联机构的自动建模与虚拟装配系统功能，完成了基于UG NX2.0平台的应用系统的开发。

According to gathering plentiful relative datum of of Xuer section of Yazihe structure and seismic、 well logging、 surveys、 core ect during the exploitation and exploration,the research starts with analise of slice data、 core observation and core specimens,then combines with coordination、 analyse、 concluding and the former research result.The article recognizes the tectonic feature of Xuer section of Yazihe structure and it"s tectonic evolution,analyzes the distributing feature of oik、 gas、 water、 their dominated factor、 the pressure feature of gas reservoir and especially the conservative condition of Xuer gas reservoir.At the same time,the article acquaintances the depositional feature and sedimentary environment and discusses the main genesis typeof reservoir sandstone.By analyzing the physical feature and physical relation of reservoir rock, the article first classifies and evaluates the reservoir rock simply ,then concludes it"s feature of reservoir and permeability. According to detailed core observation and fracture explanation in well logging ,the article uses single well fracture indentifying and evaluation to confirm the section where the fracture growths,putting emphases on the method to get parameter of fracture,such as fracture width and fracture porosity.Finally,combining with the principal curvature for tectonics deformation the article predicts the plane fracture of reservoir and weave the general evaluation map of crack fracture growth.

本文主要是通过大量、全面地收集鸭子河构造须二储层及气藏在油气勘探和开发过程中取得的地震、录井、测试、岩心及开采等方面的相关资料，从薄片资料、现场岩心观察和岩心样品分析资料入手，通过室内整理、分析、归纳，并结合前人的研究成果，认识鸭子河构造须二段的构造特征并分析构造的演化，浅析其油、气、水的分布特征及控制因素，气藏压力特征、重点分析须二气藏的保存条件；了解储层的沉积特征和沉积环境，从多方面讨论储层砂体的主要成因类型；分析储层的物性特征及物性间关系，并对储集岩进行简单的分类评价，归纳其储渗特征；通过详细岩心观察和测井裂缝解释，进行单井裂缝识别与评价，来确定裂缝发育层段，重点放在裂缝参数的求取，如裂缝宽度、裂缝孔隙度等，并结合构造曲率法进行储层平面裂缝的预测，编制裂缝发育综合评价图。

Biological approaches-such as drugs ,ECT ,psychosurgery ,or even gene therapy . Often these techniques are used before we have attained a proper understanding of how they work and what their effects might be .

生物学方法，比如药物、电休克疗法、精神外科学、甚至基因疗法，这些技术方法常常在我们弄明白它们的作用机理以及可能产生的效果之前就已使用。

Our company mainly deals in Large Scale Medical Machine which include: Multi-colored Ultrasonic Equipment, Radioactive Products, CT Series Products, Nuclear Magnetic Resonance Products ect.

北京科瑞伟业科技发展有限公司成立于1998年，总部设在北京、面向全国、立足河南，专业代理销售国际知名品牌Philips医疗器械，是飞利浦医疗X线影像系列和超声影像系列全线产品的授权代理商，主要经营飞利浦大型医疗设备，具体包括：彩超设备、放射产品、CT系列产品、核磁共振系列产品等。

The langu age is, indeed, more difficult of acquirement in the one case than in the other, and possesses more power of delighting the sense, while it speaks to the intell ect; but it is, nevertheless, nothing more than language, and all those excellen ces which are peculiar to the painter as such, are merely what rhythm, melody, p recision, and force are in the words of the orator and the poet, necessary to th eir greatness, but not the tests of their greatness.

这种语言的确比那种语言难学，当它诉诸智力时，也更能使人的感官感到愉悦。然而，它仅仅是语言，画家认为独特的各种优点，也就相当于诗人和演说家语言具有的节奏、旋律、精密和力量，这些只是他们伟大的必要条件，而不是检验他们是否伟大的标准。

Some basic equations of dual beam scan are derived,such as,the position vector for the incident point,the scalar expression for reflected ray,scan pattern on observation plane ect.

文摘：应用几何光学理论研究了多光束转镜扫描场的非对称性，导出多光束扫描入射点位置矢量、反射线标量表达式、观察面上的扫描轨迹方程，并研究了扫描远场的非对称性。

The buyers shall have the right to rei ect the Quality and Quality of the cargo.

买方有权对货物的品质和数量进行复验，复验费由买方负担。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。