英 [ˌθɪəˈretɪk(ə)l] 美 [ˌθiːəˈretɪk(ə)l]
adj. 理论的；理论上存在的，假设的[1]
theoretical basis 理论基础
theoretical foundation 理论基础
theoretical model 理论模型
theoretical value 理论值
theoretical level 理论水平
theoretical physics 理论物理
theoretical derivation 理论推导
theoretical equation 理论公式
theoretical mode 理论模型；理论众数
theoretical mechanics 理论力学
theoretical curve 理论曲线
theoretical principle 理论基础；理论原则
theoretical plate 理论塔板
theoretical distribution 理论分布
theoretical arithmetic 理论计算
theoretical density 理论密度[1]
1It's a theoretical possibility.这是理论上存在的可能性。《牛津词典》
2The course is essentially theoretical in orientation.该课程的目标基本上是理论性的。《牛津词典》
3There was undeniably a strong theoretical dimension to his thinking.不可否认，他的想法很有理论深度。《柯林斯英汉双解大词典》
4There is a time-lag between theoretical research and practical applications.理论研究和实际应用之间存在时滞。《柯林斯英汉双解大词典》
5This is certainly a theoretical risk but in practice there is seldom a problem.这在理论上肯定有风险，但在实践中却很少出问题。《柯林斯英汉双解大词典》
6The first year provides students with a sound theoretical basis for later study.第一年为学生以后的学习奠定坚实的理论基础。《牛津词典》
7So far, our discussions have all been theoretical.到目前为止，我们的讨论都是理论性的。
8Winning the Albert Einstein Award is the highest achievement in theoretical physics.获得爱因斯坦奖是在理论物理学能达到的最高成就。
9I'm very pleased to welcome Doctor Melissa Phillips, professor of theoretical physics.我很高兴欢迎理论物理学教授 Melissa Phillips 博士。
10Today, I'm very pleased to welcome Dr. Melissa Phillips, professor of theoretical physics.今天，我很高兴地欢迎理论物理学教授梅丽莎·菲利普斯博士。
11Clark refutes the extremes of the constructivists by both theoretical and empirical arguments.克拉克以理论和经验的论据驳斥了建构主义者的极端观点。
12Various theories have been put forward, many focusing on esoteric ideas from theoretical physics.人们已经提出了各种各样的理论，很多理论聚焦于来自理论物理学的深奥观点。
13The dominant theoretical model of leadership at the moment is, apparently, the "transformational leadership pattern".显然，目前领导者的主导理论模型是“变革型领导模式”。
14This diagram is, I think, the most famous diagram in all of the financial theories and it's actually the first theoretical diagram.我认为这张图表，是金融学理论中最有名的一幅图了，它也是第一幅理论图形。
15For many years, theoretical economists characterized humans as rational beings relentlessly bent on maximizing purely selfish reward.多年来，理论经济学家把人类描述为理性的存在，不懈地追求完全利己的回报的最大化。
16According to theoretical physicist Geoffrey West, when corporate institutions get bigger, they often become less receptive to change.理论物理学家杰弗里·韦斯特认为，当企业机构变大，往往更不容易接受变化。
17Each of the four fundamental forces (gravity, electromagnetism, and the strong and weak nuclear forces) has a kind of theoretical knob.四种基本力（万有引力、电磁力、强核力和弱核力）中的每一种都有一个理论上的旋钮。
18One of the main theoretical home-security concerns is whether or not a given system is vulnerable to being blocked from working altogether.理论上，主要的家庭安全问题之一，是特定系统是否易受到阻碍，完全无法运作。
19Marconi's example demonstrates that theoretical concepts and experiments complement each other in making progress in science and technology.马可尼的例子表明，在科学技术的进步中，理论概念和实验是相辅相成的。
20In some agricultural colleges at the present time, young men have to do a year's work on a farm before their theoretical training at college.在现在的一些农业大学里，年轻人在接受大学的理论培训之前，必须在农场干上一年的活。
21This limitation derives from Nakane's methodology—that of oral history—which cannot substitute for a broader theoretical or comparative perspective.口述历史这种局限性源于 Nakane 的方法，这不能取代更广泛的理论或比较视角。
22One way of solving this theoretical difficulty is to assume a delay of thousands of years while the solar effects overcome the inertia of the earth's climate.解决这一理论难题的一种方法是假设太阳效应克服地球气候的惯性时，地球会延迟数千年。
23One way of solving this theoretical difficulty is to assume a delay of thousands of years while the solar effects overcome the inertia of the earth's climate.解决这一理论难题的一种方法是假设太阳效应克服地球气候的惯性时，地球会延迟数千年。
24Lecturers typically give much more accessible descriptions of theoretical perspectives in their oral presentations than can be found in the academic literature.与学术文献相比，演讲者通常在口头报告中对理论观点给出更容易理解的描述。
25I hope you will share my delight in watching as simple, even naive, questions lead to remarkable solutions and purely theoretical discoveries find unanticipated applications.我希望你能和我分享喜悦，看着那些简单甚至天真的问题得到出色的解决方案，以及从纯粹的理论发现中找寻出意料之外的实际应用。
26Unless it is applied to real experiences, book knowledge remains theoretical and, in the end, is useless.除非把书本知识应用到实践中去，否则它仍然停留在理论层面，这样最终就毫无用处。
27Theoretical psychology includes two aspects: metatheory and substantive theory.理论心理学包含两方面：元理论和实体理论。
28The theoretical equation of the centerlinedilution along the axis of jets in coflow ambient is developed.建立了同流环境中沿射流轴线的中心线稀释的理论方程。
29Theoretical optimizations show that the equilibrium geometries of the three picolinic acid molecules are planar.理论优化表明，三个吡啶甲酸分子都具有平面的平衡构型。
30The results of this study will provide a theoretical basis for further developing trichothecenes as biological herbicides and insecticides.这项研究的结果将为进一步开发天花粉作为生物除草剂和杀虫剂提供理论依据。[1]