查询词典 atomic structure

By dehydrochlorination reaction the poly[(2-methoxyl-5-octyloxy)phenylene vinylene] is synthesized and the material"s structure is characterized by nuclear magnetic resonance spectroscopy, infrared absorption spectrum, ultraviolet and visible spectrophotometry. At the meantime, the fluorescence spectrum is measured and the mechanism of fluorescence occurring is analyzed. Thermal Gravimetric Analyzer"s results show that the MO-PPV"s thermal stability is fine. Also the experiment of resolvable property indicates that the MO-PPV can well dissolve in chloroform. Through analyzing the film"s surface by Metaloscope and Atomic Force Microscope, the good filming is found.

通过脱氯缩合法合成了聚(2-甲氧基-5-辛氧基)对苯乙炔，并分别用核磁共振波谱法、红外吸收光谱法、紫外-可见分光光度法等对其进行了结构表征；测量了样品的荧光光谱，分析了荧光产生的机理；热失重仪分析了材料的热稳定性，研究表明MO-PPV材料具有良好的热稳定性；溶解性实验发现材料在氯仿中溶解性较好；金相显微镜和原子力显微镜研究了薄膜的表面形貌，发现该材料的成膜性良好；材料的导电性研究表明，固体材料在掺杂下才可以表现出导电特性，而配成溶液的材料导电性因溶剂的不同而不同，并随溶解时间的长短发生变化。

Surface waxes of the pericarp were observed by scanning electron microscopy; the structure and composition of cell wall were studied using light microscopy, transmission electron microscopy and Fourier transform infrared microspectroscopy respectively; the changes of calcium in the cell wall were determined by atomic absorption and the integrity of cell membrane by conductivity meter respectively.

本论文采用扫描电子显微镜研究果实表皮蜡层的变化，用光学显微镜、透射电子显微镜和傅里叶变换红外光谱仪研究果实细胞壁结构和成分的变化，用原子吸收分光光度计测定细胞壁钙离子的变化，用电导率仪检测果实细胞的完整性。同时测定了果实酚类物质含量、多酚氧化酶(EC 1.10.3.1)活性、过氧化物酶(EC 1.11.1.7)活性，并分析了果实硬度、糖和酸含量等品质指标。

A newly developed three-dimensional holographic vector of atomic interaction field（3D-HoVAIF）was used to describe the chemical structure of 200 aromatic compounds with toxic effect on Tetrahymena pyriformis.

采用新型的的三维原子场全息作用矢量（3D-HoVAIF）研究了200种芳香化合物的化学结构与其生物毒性的定量构效关系。

Section BiFeO〓 is known to have rhombohedrally distorted perovskite structure with the space group R3c, which allows the ferroelectric atomic displacement below 1083K and weak ferromagnetism below Neel temperature 643K simultaneously.

2具有Pt电极的SBT、BNT和BLT薄膜抗疲劳的原因主要有三种：稳定的氧八面体层导致氧空位迁徙困难；〓层对空间电荷有自我管理和补偿作用；畴壁解钉扎的速度很快，可以平衡畴壁钉扎的速度。

Dr Schuh's team found that chrome benefits from a crystalline structure that is exceptionally small and this prevents its atomic rows from slipping.

Schuh博士的小组发现铬是得益于一种结晶质结构，这种结构微小，因此防止了原子行的滑动。

Dr Schuh's team found that chrome benefits from a crystalline structure that is exceptionally small and this prevents its atomic rows from slipping.

Schuh博士的队伍发现，铬得益于一种相当微小的结晶质结构，使得铬的原子排列不会滑动。

Sulfide layer was made on the surface of high speed steel (W6Mo5Cr4V2) by means of low temperature ion sulfurization. The tribological properties of the sulfide layer under dry sliding were investigated on an MM 200 friction and wear test rig. An atomic force microscope and a scanning electron microscope equipped with an energy dispersive spectrometer attachment were adopted to analyze the morphologies and compositions of the original and worn surfaces of the sulfide layer. The phase structure of the sulfide layer was determined by X ray diffraction.

采用低温离子渗硫工艺在 W6 Mo5 Cr4 V2高速钢表面制备了硫化物固体润滑层，在 MM- 2 0 0型摩擦磨损试验机上对渗硫层的摩擦学性能进行了干摩擦试验研究，用原子力显微镜及扫描电子显微镜和 X射线光电子能谱分析渗层表面、截面、磨面的形貌及成分，用 X射线衍射仪分析了渗硫层相结构。

A theoretical study of the surface structure of silica-supported zirconium sulfate tetrahydrate with high catalytic activity for synthesis of 2-ethoxyethyl acetate has been investigated using the ASED-MO method (including atomic repellent energy).

采用量子化学ASED-MO(含原子对排斥的EHMO法)为基础的结构自动优化EHTOPT法研究了硅胶负载型硫酸锆表面相的结构特征。

The result indicates that both the atomic motion and the field mode structure can modulate the fidelities of quantum states in the system of interaction.

结果表明：在一定的条件下，原子运动的速度和场模结构参数可调制相互作用体系的量子态保真度。

Wheat starch ; Liquefying ; Topology structure ; Atomic force microscope

小麦淀粉；液化；拓扑结构；原子力显微镜

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。