查询词典 symmetry

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。

But it is proved that this approximate method actually is exact one, and it can spread in symmetry analysis theory.

该方法还可推广到有关的对称分析理论中去。

The characteristics of ascospore, such as size, shape, symmetry, structure, pigmentation, presence, position and number of germ pores are the most important classified criteria of species.

对于种的划分，因子囊孢子的形态结构稳定，其大小、形状、萌发孔的数量及着生位置都比较恒定，应作为划分种的最重要的标准。

Topics include permutation tests, permutation limit theorems, 2-sample rank tests and their asymptotic efficiency, k-sample rank tests, 1-sample tests of location, paired comparisons, rank tests for symmetry and independence, and analogues of linear modeling based on ranks.

包括排列检验，排列极限理论，两样本秩检验及其渐进有效性，k个样本的秩检验，单样本的位置检验，配对比较检验，对称分布和独立分布的秩检验，基于秩的线性模型的模拟。

Topics include permutation tests, permutation limit theorems, 2-sample rank tests and their asymptotic efficiency, k-sample rank tests, 1-sample tests of location, paired comparisons, rank tests for symmetry and independence, and analogues

包括排列检验，排列极限理论，两样本秩检验及其渐进有效性，k个样本的秩检验，单样本的位置检验，配对比较检验，对称分布和独立分布的秩检验，基于秩的线性模型的模拟。

The electronic structure and magnetism of clusters Nin(n=2-6) have been studied by spin-polarized MS-Xα method. The results show that the effect of the cluster symmetry on its atomic magnetic moment and electronic density of states is very notable.

采用MS-Xα方法研究了Nin (n=2—6)原子簇的电子结构和原子磁矩，发现团簇的几何对称性对原子磁矩和电子态密度的分布有重要影响。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。