结构体

The results show that contents of Peroxidease and Polyphenol Oxidase are reduced and the contents of Superoxide dismutase and ascorbic acid are increased. The results of this research show that chitosan with a given MW has function on antimicroorganism and stay the caducity of plant.

电镜观察进一步证明了壳聚糖可以吸附到菌体的表面，形成一层外套或者破坏菌体的结构，从而达到抑菌的效果。

Introduced the makeup and analysis procedure of ANSYS software, and the calculating precision difference between tetrahedron element and hexahedron element are discussed, and thorough research are made to the hexahedron mesh method.

介绍了ANSYS程序结构及其分析的基本过程，重点讨论了ANSYS的模型建立和网格划分，初步分析了四面体和六面体单元对计算精度的影响，并对六面体网格划分方法进行了深入的研究。

Although there is a little carbonite caused by some magmatic dikes in the CarboniferousPermiam coal, most Carboniferous-Permian coal has no great differences in vitrinite reflectance, crystalline indices, bulk specific gravity, hardness, and the content of velotile matter from the Jurassic coal, and both are super-anthracite.

区内石炭—二叠系煤与侏罗系煤除了前者含有一些由侵入体造成的天然焦或半焦外，二者均为超无烟煤，在镜质体反射率、煤晶核结构、显微硬度、挥发份和容重等方面上均没有明显的差异，说明区域变质是在煤系地层沉积之后发生的。

Since this chemical separation of the carbon component occurs entirely in the solid state, the resulting structure is a fine mechanical mixture of ferrite and cementite.

由于这种碳成分的化学分离完全发生在固态中，产生的组织结构是一种细致的铁素体与渗碳体的机械混合物。

A little of RE can refine the grain size of the austenite, decrease the laminae pearlite cementite.

少量的固溶稀土可以细化BNbRE重轨钢的奥氏体晶粒和珠光体片层结构。

However, the centriole is not essential for spindle formation, although an analogous structure, the basal body, is responsible for organizing the microtubules of UNDULIPODLA.

但中心粒对于纺锤体的形成并不是必须的，尽管具有相似的结构－基体，中心粒对于波动足微管的形成有重要作用。

To master the ultrastructure of mitochondrion;the molecular structure elements of Oxidative Phosphorylation;electron-transport chain;the coupling mechanism of Oxidative Phosphorylation and electron transport;the main content of chemiosmotic coupling hypothesis;the structure and chemical composition of thylakoid;electron transport and photophosphorylation;the mechanism of photophosphorylation;the evidence of endosymbiotic theory.

掌握线粒体的超微结构；氧化磷酸化的分子结构基础；电子传递链；氧化磷酸化作用与电子传递的偶联机制；渗透假说的主要内容；类囊体的结构；类囊体的化学组成；电子传递和光合磷酸化；光合磷酸化的作用机制；内共生起源学说的根据。

In eukaryotes, DNA left-handed chirality by means of histone proteins around octamer to form a stable nucleosome structure.

在真核生物中，DNA按左手手征性的方式，缠绕在组蛋白八聚体的周围，形成稳定的核小体结构。

The accuracy and efficiency of finite element numerical analysis have close relationship with the mesh quality and density distribution. In order to ensure the hexahedral mesh transition gradually and conformably, a set of 8-refinement based density control templates is proposed newly. The corresponding date structure and template application techniques are also given.

有限元数值分析的精度和效率与网格单元的划分质量以及疏密程度密切相关，针对三维六面体网格单元之间疏密过渡必须平缓和协调的要求，提出了一套基于8分法的六面体网格加密模板，并给出了相应的数据结构和模板应用方式。

1H NMR spectroscopic analysis of aromatic protons combined with theoretical analysis of molecular structures proved the existence of two rotational isomers at 300 K, as well as a rapid interconversion equilibrium at 330 K for both compounds Ⅰ and Ⅱ. However, only one conformer exists for compound Ⅲ and puerarin containing 7-phenolic hydroxyl instead of propyl in A-ring as the case of compounds Ⅰ and Ⅱ. Based on UV-Visible absorption data of neutral and basic solutions, and on the density function calculations, the 7-phenolic hydroxyl group in A-ring was found to be more acidic than the 4'-phenolic hydroxyl group in B-ring. The mechanism of derivation reaction and the structure-reactivity relationship of puerarin as an antioxidant were further discussed.

其中7-丙基葛根素Ⅱ属于新型取代衍生物；变温1H NMR和理论计算结果表明，在300 K时，葛根素和4'-丙基葛根素以单一构型存在；而7，4'-二丙基葛根素和7-丙基葛根素则存在两种核磁可分辨的旋转异构体，当温度升至330 K时，两种异构体可以相互转化；通过对比分析葛根素及其衍生物脱质子产物的紫外可见吸收光谱并结合理论计算，确定了A环上7位酚羟基比B环上4'位酚羟基先脱去质子，并由此进一步阐明了葛根素衍生化反应机理以及在抗氧化作用中可能的活性位点和结构活性关系。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。