理论上

Create mentally and abstractly rather than with one's hands.

在精神上或者理论上进行创造。

But there still has deficiency in thinking and acquaintanceship with the lack of deep discussions in theory.

但从思想认识上，还有欠缺，理论上还缺乏深入的探讨。

In theory American air quality permit is regarded as an aforetime full-out permit. In practice this system emphasizes the obligation of the enterprises and renewal of the technology. Emissions trading system has been developed on the basis of air quality system and ...

美国的空气质量许可证制度有周密细致的法律法规和先进成熟的科学技术作为支持，在理论上其性质定位为一种事先的全面的许可，在实践上许可证的执行强调企业的责任和技术的更新，并引入排污削减指标的交易政策把环保事业推向市场，这些都是我国的排污许可证制度所值得研究和学习的。

This article reviews the 200kA aluminum cell uses different aluminum oxide in different periods.

结合200kA铝电解槽在使用不同性能氧化铝期间产生的影响，从理论上、实践上对中间状氧化铝与砂状氧化铝的性能进行对比分析。

A damage identification method based on axial vibration was presented on the basis of theoretical derivation axial vibration differential equation and analytical solution of three kinds of support form.

在理论上推导悬臂梁轴向振动微分方程及其3 种支座形式的解析解的基础上，提出了一种基于轴向振动的结构损伤识别方法。

This paper discusses the arithmetic anamnesis of bubblesort and quicksort and gives some ameliorate method.

探讨了冒泡排序和快速排序两种排序方法的算法思想、改进方法以及存在的一些问题，给出了理论上比较次数最少的插入归并排序，得出排序算法时间复杂度的下界和上界。

Correlation between spin angular momentum s and background angular momentums of planets;2. In the paper the principle of optical rotation due to the transfer of spin angular momentum from light to particles was discussed by analyzing the interaction between the beam of light and birefringent crystal particles, and then an optical tweezers was formed on nanometer optical tweezers system with a linearly polarized light beam (He-Ne laser 633 nm, 10 mW).

从理论上分析了偏振光束与双折射晶体粒子的相互作用过程，讨论了由于光束自旋角动量向晶体粒子的传递所导致的光致旋转效应的原理，并在纳米光镊装置上利用线偏振He Ne激光器(633 nm，10 mW)形成了光镊光阱，利用1/4波片来改变光镊光束的偏振状态，在不同的椭圆偏振状态下实现了直径约为几微米的CaCO3 晶体微粒的捕获和光致转动。

In theory, you can Apollo on the creation of a web browser.

理论上你可以在Apollo上创建一个网页浏览器。

In architectonics, the calculation of rectangular plate on elastic foundation, in common, is used by the finite element method and chart .

在建筑结构设计中的局部均布荷载作用下非均匀弹性地基上矩形板的计算一般采用有限元法和图表，在理论上很难获得一般性的解析解。

His discussion of "directional movement" and "relative strength" are articulately presented in terms of both theory and practice and are complete with charts and actual examples.

不管是在理论上，还是在实践上，他十分清楚地阐述了"方向性移动"和"相对强势"的观念，而且有一堆图表和实际的例子配合解释。

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。