理论上

By using the Euclidean algorithm and invertible linear transformation over an integral ring, the solution of integral indeterminate equations of the first degree was investigated in theory, and its matrix solution based on the elementary matrix transformation was proposed.

用欧几里德算法和整数环上的可逆线性变换，从理论上对整数一次不定方程组的解进行了深入研究，提出了用矩阵的初等变换求解整数一次不定方程组的矩阵解法，并利用MATLAB数学软件开发了相应的计算机程序。

We should meet these challenges, emancipate our mind both theoretically and practically and call for new breakthroughs.

进一步的努力，需要认真对待这些挑战，在理论上和实践上解放思想，都需要有新的突破。

To equip students with the practical and theoretical knowledge and skills relating to modern database systems.

本课程的目的是让学生在实践上和理论上掌握现代数据库系统的知识与技能。

Erbium doped fiber amplifier is studied theoretically and experimentally in this dissertation.

本文从理论上和实验上对掺铒光纤放大器进行了研究。

The parameter estimation of the linear model is one of the basic issues of the linear model statistical deduction.

因此，线性模型无论在理论上还是在应用上都起着非常重要的作用。

He did not only make his paintings excellently prominent, but also contributed a lot to the painting theory.

也正是经过他长期的实践和学习，他在绘画上卓有成就，而且在理论上贡献也不小。

In theory, to issue exchangeable bonds on the market is good.

从理论上讲，在市场上发行可转换债券是好的。

It is shown from the experimental error analysis that the results of this paper ar...

因此，实验上严格和完善实验研究方法，理论上深入研究相互作用势仍然是一项艰巨的任务。

This study makes a projecting try, which opens up the eyeshot for the consumption study from now on. This study will benefit the research of collegians' consumption on theory and practice.

本研究做了一个初步性尝试，为今后相关方面的研究开拓了视野，具有一定的理论上和实践上的借鉴作用。

In recent years,the subtle oil and gas reservoirs in Heidimiao Formation of Daqing have been studied,and great breakthrough has been obtained theoretically.But there are still some difficulties in identifying clearly the river channel sand-body,fan delta,sheet sand and so on at various depths.

摘要几年来，大庆地区黑帝庙油层隐蔽油气藏的研究在理论上取得了重要突破，但在地震上如何清晰识别不同埋深的河道砂体、扇三角洲、席状砂等特殊异常体还存在一定困难。

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。