查询词典 atom structure

With the increasing content of SiO_2-TiO_2, the network structure increased; the diameter of the fibers increased gradually; blending and contorting structure existed and even ribbon structure appeared.

随(SiO_2-TiO_2)含量的增加，形成的网络结构增多，纤维的直径不断增加，并出现弯曲和扭曲现象，甚至有带状结构出现。

Synthetically considering these characteristics, the method of freeway management and control are presented according to four aspects: system objective orientation and concept design, system demand and requirement analysis, system data management and network structure, traffic control and accident detecting theory as well as its application. Function and structure of system are delimitated from the point view of integration. Construction and function demand of subsystem are analyzed and basic implement projects are presented. In this thesis, system data flow and management method and target which based on system network topology structure and equipment demand are described. Traffic modeling ideology and the process of making dynamic model as well as accident detecting program are presented with centralized and distributed traffic control theory in detail, then freeway ramp control theory which based on predictive model and its theoretic pattern are explored. Finally, based on the object oriented programming, program of accident detecting and checking on freeway is developed by using visual C++ as tool.

论文综合考虑高速公路交通管理系统的上述特征，分别从系统目标定位及概念设计、系统需求分析、系统数据管理及网络结构分析、交通控制与交通事件检测理论与应用四个层面，对高速公路交通管理与控制问题进行了系统阐述，界定了系统的功能及各功能的实现要求，并从系统集成角度划分了系统的结构；分析了各子系统的信息、功能、建设等方面的需求，给出了基本实施方案要求；对系统数据流程进行了描述和梳理，提出了数据管理的方法、目标及措施，分析、设计了系统网络拓扑结构及设备需求；阐述了交通模型的建模思想和动态交通模型的建立过程，对集中式和分散式全局交通控制理论进行了详细的分析，提出了基于预测的高速公路匝道控制理论，并对理论模式及相关的问题进行了研究，分析了高速公路事件检测系统，并采用面向对象的编程思想，以Visual C++为编写工具，开发了高速公路事件检测系统分析软件。

The cavity depth of the structure changed gradually from 70mm to 140mm. The structure has wide frequency range and low frequency absorbing characteristic, can be useful to absorb the diffracting sound over the top structure.

这种结构空腔深度为70mm~140mm，空腔截面逐渐变化，具有吸收低频及宽频带噪声的特点，可以更好吸收顶部绕射声。

Chapter 8 puts forward that the establishment of corporate equity ownership structure must adapt to its outer business circumstance after theory study, comparative analysis and positive analysis. Furthermore, it disserts that modest concentrated and rights restricted equity ownership structure mode in China, as well as it puts forward the policy suggestion on improving equity ownership structure.

第八章，在理论研究、比较分析与实证分析的基础上，提出股权结构的设置必须适应公司的外部经营环境；在现阶段应根据我国国情和现实建立适度集中而权利制衡的股权结构模式，以及改善股权结构的政策建议。

Complete genome sequences of 20 viruses in Bunyaviridae loaded from NCBI were analyzed by two biological softwares of DNAMAN and DNASTAR. The results indicated great variability in both nucleic acid sequence and protein structure between plant viruses and animal viruses:(1) only plant viruses could encored NSm in M genome;(2) the length of nucleic acid sequence and protein sequence was different;(3) GC content of nucleic acid of animal viruses was higher than plant viruses of that;(4) protein topology analysis by online software SMART discovered that there was significant difference for the structure of glycoproteins G(subscript nG between animal-infecting and plant-infecting viruses;(5) usually, protein of plant-infecting virus had more complicated structure, more low compositional complexity and had N-Signal peptides except INSV.

本文从NCBI数据库下载具有完整基因组序列的布尼亚科病毒的5个属20种病毒的序列，用生物学软件DNAman，DNAstar进行比对分析，发现布尼亚科病毒属中的植物病毒在核酸序列及蛋白结构上与动物病毒有很大差异：(1)只有植物病毒的M基因组能编码NSm运动蛋白；(2)植物病毒和动物病毒在核酸序列和蛋白质序列长度均有差异，表明该科病毒是进化速度较快的病毒；(3)植物病毒核酸序列的GC含量低于动物病毒；(4)通过SMART网络软件进行蛋白质拓扑结构分析发现植物病毒和动物病毒在糖蛋白GG的结构上存在显著差异；(5)植物病毒糖蛋白结构较为复杂，有较多的紊乱区域，除INSV外，其他病毒都具有N端信号肽。

A water model for simulation of 1050 mm mold is established to investigate the effects of SEN structure, casting speed, immersion depth and other parameters on the fluctuation of the liquid level in the mold, the impact depth of the steel stream and entrapping of the flux, and compare the influence of different structure parameters and operating parameters on the flowing field in the mold in order to find out the best suitable compromise between the structure parameters and the operating parameters and then...

针对 10 5 0mm× 15 0mm断面的结晶器，建立了水模型，研究浸入式水口结构、拉速、浸入深度等工艺操作参数对结晶器液面波动、流股冲击深度及结晶器钢液面保护渣卷入情况的影响，比较不同水口结构参数及操做参数对结晶器内流场的影响，从而找出结构参数与工艺参数间配合最佳的工况，为水口设计提供理论依据，并经优化的水口在实际中应用，使安钢第二炼钢厂的板坯退废率由 1.5 0 %降为0 。6 %。

Parameter study of three-way guyed mast structure ;2. Damage detection method for vertical bars of mast structure in time domain;3. According to structural dynamic features of mast structure and the change of dynamic properties after damage modal analysis is applied for damage detection.

研究了桅杆结构的破坏原因和破坏机理，针对桅杆结构本身的结构动力特性和损伤后的动力特性改变，对应用模态分析方法在桅杆结构的损伤诊断的应用问题进行了分析，指出了模态分析的损伤诊断方法在桅杆结构中的应用方向。

A novel double hairpin molecular beacon that has more stable structure than traditional molecular beacon has been designed. Its hairpin structure will not fully open when it hybridizes to cDNA but the hybrid can be cut by restriction endonucleases, which leads to destroy of its structure and restore the fluorescence.

本论文的主要内容包括以下三个方面：(1)基于双发夹分子信标分析核酸甲基化酶及药物筛选我们设计了新型分子信标-双发夹分子信标，该探针具有比传统分子信标更稳定的分子结构，与互补核酸链杂交后发夹结构不完全打开，但在酶切反应后其发夹结构被破坏，荧光又可恢复。

In this paper, the stable Au complexes are classified according to the coordination atoms and their characteristic structure. The recent development of the researches on the antitumor activity of Au complexes including the structure-activity relationship, biological targets and the mechanisms of action are reviewed. The structure of the coordination ligand and the leaving group have great impact on the in vitro cytotoxicity of the Au complex. Many physical and biological methods are introduced to study the interaction between the Au complexes and the suspected bio-target, such as DNA, protein, mitochondrion, thio-containing biomolecules, etc. The interaction modes (intercalating, electrostatic interaction, covalent bonding, etc.) are focused to illustrate the reason for the antitumor activity of Au complexes.

本文按配位原子的不同总结了稳定三价金配合物的结构特征，按其生物活性的构效关系、生物靶点和作用机制综述了三价金配合物抗肿瘤活性研究的最新成果：配体的结构特点以及离去基团对三价金配合物的体外细胞毒性影响较大；介绍了用于检测三价金配合物与可能的生物靶分子之间的相互作用的多种物理和生物学方法，重点关注了相互作用的模式，如嵌入/静电吸引/共价结合等，并解释了三价金配合物抗肿瘤活性的原因。

This paper holds that human activities have been conducted in the structure of practical actions, structure of cognition and structure of communication (interchanging/contacts).

本文认为人的活动是在实践行动结构、认知结构和传播结构中展开的。

My father is over 60 years old, and he lifts weights every day.

我爸爸六十多岁了，他每天都练习举重。

Then in a serious tone she declared:"It doesn't pay, dear boy, to look like a ninny with one's wife the first night."

两眼湿润了，她把身子蜷得很小，这样似乎可以更好地闻闻自己。