理论上

The research of delay differential equation is very important in theory and in practice.

时滞微分方程的研究无论在理论上还是在应用上都有十分重要的意义。

So the study on tertiary dendrite growth will be great value both in theory and in engineering.

因此，研究三次枝晶的形成规律和物理冶金，无论是在理论上还是在工程上都具有重要的价值。

These researches developed and enriched the relevant results of psychology on theory, and as well in practice, e.g. the essences of human intelligence, deploration of human"s intelligence, training the thinking ability of students and the problem solving, such as,"teach the students how to study mathematics .

这一研究除了在理论上丰富和发展了心理学的有关研究之外，在实践上对于揭示人类智力的本质、开发人类智力，培养学生的思维能力和解决"教会学生如何学习数学"等问题都具有十分重要的意义。

With the development of science and technology, the diesel engine design not only in theory but also in application changes greatly.

随着科学技术和生产的发展，柴油机设计无论是在理论上或是在技术和应用上都取得了令人瞩目的进展。

This paper researches the construction of clothing band collar and grown-on collar and analyses the interrelated relationship of construction by means of the image principle among cast planes of cast geometry and the direct reflective correspondence nature of square curve.

本文运用射影几何中射影平面间的仿射原理及二次曲线的直射对应性质，研究立领和连身立领的结构组成，分析其经构内在相互关系，最终从理论上剖析了两类衣领的结构设计原理，在实践上提供了两类衣领精确而实用的设计方法。

Based on the fact that the passengers' demand number is a discrete random variable the formula deduction is demonstrated...

最后，通过实例分析、计算并与传统公式相比，表明新公式在理论上较为完善，在工程上也实用、简便。

We hope the disquisition and innovation could be helpful to advance the practice of the urbanization stratagem.

希望我们能够在理论上、政策上进行探索和创新，进而对科学地推进城市化战略的具体实践活动提供参考。

Conceptually this insistence on male-exclusive interrelations catalyzes Just's reappraisal of common notions of masculinity as a stereotypical gender role characterized by physical virility,(usually hetero-) sexual aggressiveness, emotional stoicism, intellectual pragmatism, and dominant egocentricity.

理论上这种对男性特有的相互关系的坚持，促使Just对男子气概的概念进行重新评价。作为一个刻板的性别角色，男子气概的特点是身强体壮、性攻击性、感情贫乏、理智上倾向于实用主义、明显以自我为中心。

The theoretical discovery of an electromagnetic wave spreading with the speed of light is one of the greatest achievements in the history of science.

从理论上发现以光速传播的电磁波，这是科学史上最伟大的成就之一。

Theoretically speaking, the use of electronic bulletin board on Internet and in real life the role of the bulletin board is the same.

从理论上讲，Internet 上的电子公告板与现实生活中的公告板的作用是一样的。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。