查询词典 symmetry

Pathological changes in biological tissues usually cause changes in their microstructure. Since the second harmonic generation signal is highly sensitive to the symmetry change of the microstructure , SHGI can be used for the early diagnosis of diseases and the monitoring of aftertreatment in clinics.

生物组织的病变往往会引起微观结构的变化，而二次谐波信号对组织的结构对称性变化高度敏感，因此二次谐波成像对于某些疾病的早期诊断或术后治疗监测，具有很好的生物医学应用前景。

In chapter four, by the concept of negative definite of symmetry interval matrix, methods of analysis of interval matrix and the method of Lyapunov function, the robust absolute stability of Lurie control system with multiple nonlinearities was investigated, and some algebraic sufficient conditions in the form of inequalities of interval matrix were obtained.

在第四章，通过定义对称区间矩阵负定的概念，主要用区间矩阵分析技术和Lyapunov函数方法，研究了具多非线性的区间Lurie控制系统的鲁棒绝对稳定性，我们给出了此类区间Lurie系统鲁棒绝对稳定性的区间矩阵不等式形式的代数充分条件。

By complete discrimination system of polynomial algebraic equation and resultant theory, a symmetry class of quartic systems with stellar node is studied.

利用多项式代数方程的判别系统理论和结式理论，讨论了具有星形结点的一类对称四次系统的代数分类，并对系统进行全局分析。

We see the symmetry we have attributed to allylic particles on the basis of the resonance theory; the two ends of each of these molecules are equivalent

我们看到了曾经根据共振论而归因于烯丙基型粒子的对称性，所有这些分子中每个分子的两端都是等性的。

Based on wave propagation feature, this paper analyses 3D seismic migration algorithms such as alternating direction implicit method, LU decomposition method, and inverse operator approach method. The result shows that the alternating direction implicit method is fast but causes distortion in wave field extrapolation and affects image accuracy; however LU decomposition and inverse operator approach methods are fast while holding circular symmetry of wave field, and are promising in oilfield exploration and development.

在波的传播特征分析基础上，对交替方向隐式法、LU分解法、逆算子逼近法等三维地震偏移算法进行了分析研究，结果表明，交替方向隐式法虽然快捷但是在波场外推中明显产生畸变并影响成像的准确性，而LU分解和逆算子逼近法是保持波场圆对称特征前提下的快速算法，在油田勘探开发中具有较好的应用前景。

Effect of amphetamine and phencyclidine on DNA binding activities of serum response and dyad symmetry elements .

影响安非他明和苯环的DNA结合活动的血清反应和对子对称要素。

This thesis introduces the research history of sonoluminescence, the properties and equipments of single-bubble sonoluminescence and the factors affecting the amount of light emission. Based on the experimental realization of SBSL, the experiment in this thesis is to confirm the coherence between the emitting frequency and the driving cycle of SL. Under this feature ,we established the programme of the experiment that measure the angular correlations in SBSL , built the experimental devices and conducted initial measurements .Then we got the conclusion that there is a presence of non-spherical symmetry in the process of SBSL .

本文介绍了声致发光的发展历史，对单泡发光的特性和实现声致发光的设备进行了描述，对影响发光强度的要素做了概述；并在实现单泡声致发光的基础上通过实验验证了单泡声致发光的发光频率与驱动超声频率具有一致性的特点，根据这一特点确立了声致发光角分布测量的实验方案，建立了实验装置，并进行了初步测量，得到在声致发光的过程中存在着非球形对称状态的结论。

It is true that he used the old patterns all his life with dogged conservatism (another Sansculotte characteristic, by the way); but the imposed on them such an overwhelming charge of human energy and passion, including that highest passion which accompanies thought, and reduces the passion of the physical appetites to mere animalism, that he not only played Old Harry with their symmetry but often made it impossible to notice that there was any pattern at all beneath the storm of emotion.

不错，他一生非常保守地（顺便说一句，这也是激进共和主义者的特点）使用着旧的乐式；但是他加给它们以惊人的活力和激情，包括产生于思想高度的那种最高的激情，使得产生于感觉的激情显得仅仅是感官上的享受，于是他不仅打乱了旧乐式的对称，而且常常使人听不出在感情的风暴之下竟还有什么样式存在着了。

Due to the symmetry of the plate, there are symmetric and antisymmetric mode vibrations with respect to the median plane of the plate.

首先建立了在偏压电场作用下压电介质的运动微分方程，进而根据对称模态和反对称模态的特点，分别在自由表面电学开路和电学短路情况下得到了Lamb波传播的相速度方程。

At last, we will analyse thecultural characters of Han nationality that the antonymous morphemes has carried in itsdevelopment from the point of view of language and culture, language and social mentality,e.g. unity of opposites, representational thought and harmonious symmetry and so on, andalso cites its rhetorical effect in use.

最后，我们从语言与文化、语言与社会心理层面分析反义语素合成词在产生发展演变过程中所承载的汉民族文化的种种特点，如对立统一、具象思维、和谐对称等等，并列举了它在使用中所具有的修辞效果。

"Yes, now you can give yourself airs," she said, you have got what you wanted.

"对了，您现在高兴了，"她说道，这是您所期待的。

Then the LORD said to me: Rebel Israel is inwardly more just than traitorous Judah.

上主于是对我说：＂失节的以色列比失信的犹大，更显得正义。