理论上的

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。

The research of matrixes is continuously an important aspect of the quaternion division algebra. The purpose of this paper is to discuss the property of skew self-conjugate matrix. The definition of skew self-conjugate matrix on real quaternion division algebra is given.

四元数体上矩阵的研究是四元数代数理论中的一个重要方面，本文研究实四元数体上斜自共轭矩阵的性质，给出实四元数体上斜自共轭矩阵的定义。

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。

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

利用欧几里德算法和多项式环上的可逆线性变换，从理论上对多项式环上的一次不定方程组的解进行深入的研究，给出了用矩阵的初等变换求解多项式环上的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。

Proceed from general conclusion of algebra on the finite field, study this special algebra system of Elliptic Curve on the finite field, Discuss that sets up several theories of the Public Key Cryptosystems and the problems of implementation on it.

从有限域上的代数的一般结论出发，研究有限域上的椭圆曲线这一特殊的代数系统，讨论在其上建立公钥密码体制的若干理论和实现问题。

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。

The land expropriate cannot eliminate the right to contract for management of land.

在理论上，土地所有权的征收已不能消灭土地上存在的作为独立用益物权的土地承包经营权；在实践上，如不征收补偿土地承包经营权，失地农民的经济状况相比同一集体经济组织的其他成员会显著恶化。

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。

But there are still some difficulties in identifying clearly the river channel sand-body,fan delta,sheet sand and so on at various depths.

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。

He is the most remarkable man that I have ever known.

他是我知道的人中最值得注意的人。

Increased appearance of lymphocele was noticed in patients with diabetic nephropathy, congenital malformations of the urinary tract, and inflammatory diseases, including glomerulopathy and extraglomerular ones, after high-voltage radiotherapy and after removal of the renal graft.

经过高压放射疗法和切除移植肾后，在糖尿病肾病患者、泌尿系统先天性畸形患者和炎症患者身上发现淋巴囊肿有所增加，包括肾小球病和球外疾病等。