查询词典 topological structure

According to the relationship between the thickness and the location, a typical complex protective structure is presented, and a series of numerical simulations are conducted to research the structure response and anti-blasting performance of this typical structure.

根据研究成果，提出了一种新型复合防护结构形式及结构参数，并对该复合防护结构的结构响应及抗爆性能进行了数值模拟研究。

Simulation of the priority operator parsing constructor FirstVT mainly grammar and structure LastVT set simulation, operator precedence relations form the structure, function operator priority table structure, the sentence analysis of several parts, such as reduction process.

算符优先语法分析模拟构造器主要包括文法的FirstVT和LastVT集模拟构造，算符优先关系表的构造，算符优先函数表的构造，句子分析归约过程等几个部分。

From the angle of analysis, Mandarin segmental structure and syllable structure are the basis for the constraint hierarchy to derive the grammatical surface forms; from the theoretical angle, there exists the question such as whether unary segmental specifications and the non-linear representations of the syllable structure are compatible with the surface oriented constraints and the constraint hierarchy.

从分析的角度来看，对普通话的音段结构和音节结构的研究是依靠制约条件推导符合语法的形式的基础；从理论的角度来看，音段结构和音节结构的非线性表达方式和以表层形式为作用对象的制约条件本身以及制约条件系统之间存在着理论兼容的问题。

The main works include five parts:(1) A modified K-means algorithm for optimizing the RBPNNs' structures was proposed;(2) The RBPNNs' structure optimization method based on the orthogonal least square algorithm was proposed that can greatly reduce the computation expense for the structure optimization;(3) Using the GA to perform the whole structure optimization of the RBPNNs was proposed in this thesis, which include simultaneous optimization of the hidden centers and the corresponding controlling parameters of the kernel functions.

主要工作体现在如下三个方面：(1)提出一种改进的 K-Means 算法；(2)提出了基于递推正交最小二乘算法的结构优化算法来训练径向基概率神经网络，从而大大减小了用于结构优化的计算开销；(3)提出使用遗传算法来实现径向基概率神经网络的全结构优化，即隐中心矢量和核函数控制参数同时优化，通过新设计的编码方式、新构造的适应度函数，充分发挥了 GA 的全局搜索性能，使得所优化的径向基概率神经网络的结构趋于最简。

The research on the surface soil structure ,soil anti-erosion and soil anti-scour in the limestone region of karst area in the middle of Guizhou prov- ince shows that arbor forest improve the soil structure and contain important function,the overlay degree of vegetation under the forest has the great influence on the soil structure .

贵州喀斯特地区土壤侵蚀十分严重，已引起广泛关注，通过对黔中喀斯特石灰岩地区表层土壤结构性。土壤抗蚀性能和抗冲性能研究，表明乔木林对改善土壤结构有重要作用，林下植被的覆盖度对土壤结构的影响也较大。

The author in this paper considers that the coherence is a comprehensive concept, and any concept is just the description from one aspect. This paper carries on the analysis from the perspective of thought pattern at the cognitive level. According to the discussion on Kaplan"s viewpoint and the contrary arguments by the other scholars, the conclusion can be made as the contrastive analysis based on the texts parallel in register tends to be tendentious, sketchy and indefinite, so the contrary examples provided by other scholars illustrate that it is impossible for modern Chinese text structure to be influenced by the traditional text structure of "ba gu wen alluded to by Kaplan. This paper provides contrastive analysis on the basis of texts parallel in translation, which can present the most essential different characteristics of Chinese and English texts, and guide the development of every aspect in the translation process, and help to convey the meaning of source language faithfully as well as to construct the text structure in different ways which possess the characteristics of their own languages.

而本文所讨论的与连贯有关的分析层面属于认知层面中的思维方式角度，文章从中西思维方式差异的对比出发讨论了科技篇章连贯性的差异；对于Kaplan所提出的观点以及其反对者的观点进行讨论，得出结论为：以语域对应材料为基础的连贯性对比导致了Kaplan结论中的倾向性，概括性与模糊性，从而反对其观点的学者可以在中文学生做的英文作文中找出反例并提出了反驳意见，他们认为中文传统思维模式即Kaplan所暗示的八股文结构并不会影响到现代中文学生组织英语篇章结构；而本文以翻译对应语料为基础进行英汉篇章中基本结构的对比，这不同于语域对应材料的对比是以语域一致为基础进行整体篇章的重新组织，因为翻译对应材料的译文不可能出现对原文整体结构的大调整，而只可能体现出篇章中小范围语义结构的基本差异，从而避免了倾向性的观点，可以体现出中西思维方式在篇章组织结构上最基本的差异，本文还总结出翻译中所应注意的两种语言的特点，从而指导翻译过程的各个方面，达到译入语与译出语在意义上的忠实传达与结构上忠于源语特点的效果。

RESULTS : The vascular bundle structure is much complicated than the phellem structure and bast structure .

结果：通过对中药材异常构造特点的综合系统分类研究，指出木栓组织，韧皮组织和维管束组织等方面的异型构造，其中维管束异型构造较为复杂。

In this chapter, three kinds of target recognition methods are performed, which are:①Target recognition method based on the description of polarization parameter plane. The echo polarization states of target are projected onto the polarization state plane described by the ellipticity ε and the tilt angle τ of the polarization ellipse, the change of parameter following ferquency becomes the chart. According to the changing trait of the chart, the multidimensional polarization feature space of target has been contructed. Furthermore, a series of polarization feature parameters used in designing the structure of target recognition device are extracted, and they are insensible to the posture of target.②Target recognition method based on the description of Poincare polarization sphere. The echo polarization states of target expressed by Stokes vector are projected onto the Poincare polarization sphere. The conception of polarization ferquency stability, which is used in describing the dynamic distribution characteristics of the target echo polarization states on Poincare polarization sphere, has been defined. A group of polarization feature parameters used in designing the structure of target recognition device are extracted, and they are insensible to the posture of target.③Target recognition method based on the description of frequency sensitivity. In accordance with the conception of the polarization state distance defined on Poincare polarization sphere, the frequency sensibility of the physical structure property of target has been investigated, the frequency distribution feature curves in PSD domain are obtained, and targets'features are extracted by means of the curve-fitting method with Least Square Criterion.

这章具体研究了基于三种极化散射特性描述的相应的目标识别方法：①基于极化参数平面描述的目标识别方法，将目标回波极化状态投影到以极化椭圆参数，即椭圆率角ε和倾角τ表征的极化状态平面上，参数随观测频率的变化就形成了图，根据图的变化特点构造了目标的多维极化特征空间，并提取了不敏感目标姿态变化的极化特征参数组来设计目标的识别器结构；②基于Poincare极化球面描述的目标识别方法，采用Stokes矢量表征目标回波的极化状态，并将其投影到描述极化状态的Poincare极化球面上，定义了极化频率稳定度的概念用以刻画目标回波极化状态在Poincare极化球面上的动态分布信息，提取了准方位不变性的目标极化特征，最后设计了目标的识别器结构；③基于频率敏感性描述的目标识别方法，通过在Poincare极化球面上所定义的极化状态距离的概念，研究的是复杂目标物理结构特性对探测信号频率的敏感程度问题，获得了在极化状态距离下的频率分布特性曲线，采用最小二乘估计曲线拟合方法，它既用于极化特征的降维，同时又直接将拟合参数作为目标的分类特征。

By using the calculated results of EET theory, the local valence electron structure elements of residual chemical bonds of Al-Si and Mg-Al alloy melts, that is, the residual bond structure models, were established. From the viewpoint of effect of pressure on melt structure, the essential reason of deviation phenomenon for maximum solution point and eutectic point in thermodynamics equilibrium phase diagram was analysed. Moreover, under pressure condition, the change of thermodynamics equilibrium phase diagram was macroscopic reflection of microstructure change of alloy melt.

运用固体与分子经验电子理论的计算结果分别建立Al-Si、Mg-Al两种合金熔体的剩余化学键的局域价电子结构基本单元即残余键结构模型，从压力对熔体结构作用的层面，分析热力学平衡相图中最大固溶点和共晶点发生偏移的本质原因，并指出压力作用下热力学平衡相图的变化是合金熔体微观结构信息变化的宏观反映。

It was observed that dynamic behavior of the structure is quite similar with that of single mass point structure, and that the design variables and locations of poles have a great effects upon the dynamic behavior of the whole structure.

对于码头上作用的波浪力和船舶撞击力动力荷载，本文分别进行了适当的处理与模拟，并对结构的动力位移响应进行了计算分析。

Researches reveal that students who suffer from corporal punishment tend to resort to violence in their future life.

研究表明遭受过肉体惩罚的孩子倾向于在他们今后的人生中使用暴力。

Total sugar of sarcocarp and chlorophyll of pericarp increased firstly, and then decreased afterward along with altitude; Titratable acidity, ascorbicacid and anthocyanin of pericarp were increased along with altitude; The content of protein increased firstly and decreased afterward along with altitude; Carotenoid of pericarp were decreased along with altitude.

果肉总糖和果皮叶绿素含量随海拔高度升高先升高后降低；可滴定酸、维生素C和果皮花青苷含量均随海拔升高而升高；蛋白质在1720m处最大，1420m处最小；果皮类胡萝卜素随海拔升高而降低。