查询词典 Freud's theory

Calculating the functions of the matrix exponential e has special significance in the theory of linear systems and the theory of semi-groups. Especially, in the modern control theory, no matter the equation is homogeneous or non-homogeneous, the result depends on the calculation of the matrix exponential e.

矩阵指数函数e的计算在线性系统理论及半群理论中有着特殊的作用，在现代控制理论中，无论是齐次方程还是非齐次方程的求解，主要取决于矩阵指数函数e的计算和近似。

In this paper,we firstly utilize homogeneous linear coordinate transformation to express the object image conjugate theory of Gauss optic system;then compare it with the acting matrix in Theory of Motion Optics,expatiate on the relations between the coordinate transformation method and Theory of Motion Optics.

利用齐次线性坐标变换，将光学系统的高斯物像共轭理论用齐次坐标变换的方法来描述，并与动态光学理论中的作用矩阵相比较，阐述坐标变换方法与动态光学理论的关系。

K. H. Roscoe and his fellows of Cambridge University established the first elastoplastic model of soils which is based on classical plastic theory in 1963. However, due to the complexity of soils, the models that based on the classical metal constitutive theory or its modification accounting on the nature of soils have still much limitation when used to express the soil mechanical behavior. For example, the Duncan-Chang's model based on the generalized Hooke's law can not express the dilatancy of the soils. The uniqueness assumption of the direction of the incremental plastic strain in the classical plastic constitutive theory is not in agreement with some soil experiments.

但由于土的复杂性，目前以传统的本构理论为基础考虑土的一些特性而建立的模型在反映土体的力学特性上还存在很大的局限性，如建立于广义虎克定律基础上的Duncan—Chang模型不能反映土的剪胀性，传统的塑性本构理论中认为塑性应变增量方向具有唯一性的假设与一些土体的试验结果不符合。

This text takes theory and practice unification as the guiding ideology, uses the knowledge and method of scientific and technological philosophy, agro ecology and iconology, etc. has elaborated the connotation, basic theory and principle, characteristics and benefits of Chinese ecological agriculture emphatically, proved the dialectical relations between Chinese ecological agriculture and agriculture sustainable development, expounded the intrinsic unity and interaction; Finally, under the guidance of theory of agriculture sustainable development strategy, integrate with practice, put forward some suggestions from thought aspect, policy aspect, technological aspect and information aspect to develop Chinese ecological agriculture and impel the agriculture of our country sustainable development.

本文以理论与实践统一为指针和思维导向，运用科技哲学、农业生态学和生态经济学等有关学科的知识和方法，着重阐述中国生态农业的内涵、基本原理、特点和取得的效益，论证中国生态农业与农业可持续发展的辩证关系，阐明二者的内在统一性和相互影响、相互作用；最后，在农业可持续发展思想的理论指导下，联系实际，从思想层面、政策层面、技术层面以及信息层面上提出了中国生态农业发展的对策建议，以推进我国农业可持续发展。

Psychological theories of humor are:(1) Incongruity Theory;(2) Superiority Theory;(3) Relief Theory.

幽默感的心理学理论主要有：（1）失谐理论；（2）优势理论；（3）释放理论。

The main theories explaining its origins and development are Incongruity Theory, Superiority Theory and Relief Theory.

解释其发生发展机制的理论主要有失谐理论、优势理论和释放理论等。

The condition theory,the cause theory and the correspondence of causal relationship theory that existed historically all confuse the causality issueswith incrimination issues.

历史上曾经存在的条件说、原因说以及相当因果关系学说都是将因果关系问题和归责问题混同在一起。

Based on computing ways by theory models and error evaluating index, to compute using observed data chose from the Yellow River, combining the theory analysis, experimental research and problems in the actual survey, to validate the correctness of theory, researching methods and obtained conclusions.

本文的研究成果直接解决了黄河水文测量中的一些重要问题，研究的方法提出的理论也适用于其它河流和流域，拓宽了水文测量误差研究的领域，推动了水文测量的发展。

The error of SIF is discussed too. Then an index to estimate error of SIF is advised. The analysis shows it is a feasible and correct parameter.Size effect, Numerical analysis, Statistical theory, Energy theory, Fractal theory

8在对应力强度因子的计算方法进行评述的基础上，对应力强度因子的计算误差进行了分析，提出了一个使用有限元方法求解应力强度因子的误差指标参数。

Hypoplastic constitutive theory, which was originated from the middle and late stage of the 20th century, is a new type of soil constitutive theory based on rational mechanics. Hypoplastic theory can reflect inelasticity, nonlinearity, dilatancy and other main mechanical properties of granular material.

亚塑性本构理论是20世纪中晚期发展起来的一类基于有理力学的新型的连续介质本构建模理论，主要用于刻画无黏性散粒型上体的非弹性、非线性及剪胀性等主要应力应变特性。

However it can often be frust ating for a child when people are unable to pronounce their name.

但它往往可以令人沮丧的一个孩子当人们无法断言他们的名字。

All these compounds were obtained from this genus for the first time. Compound, 4-cumylphenol, was a new nature product.

所有化合物均为首次从本属海藻中分离得到，其中4cumylphenol为新天然产物。