合成

An approach was presented to evaluate fundamental frequency of bridge piers based on the combination of Rayleigh method and Southwell method.

在瑞利法和Southwell频率合成法的基础上导出了桥墩复合振动基频的计算公式，将基频表示成各惯性元和复原元所组成子系统的频率合成。

Chromium species in organic chromium catalyst is determined with plasma emission spectrography.

已酸铬是乙烯齐聚合成1-己烯的主催化剂，通过它与助催化剂的络合反应可以高选择性地合成1-己烯。

The synthesized monomer and fluorescent polymers were characterized by the methods of nuclear magnetic resonance (~1H NMR), mass spectrography, fourier transform infrared spectroscopy, ultra-violet-visible spectra and differential scanning calorimetry, respectively.

采用核磁(~1H NMR)，质谱，红外光谱，差示扫描量热法，可见紫外分光光度仪和荧光光谱等方法对合成的荧光分子以及荧光聚合物的结构和性能做了表征，系统地研究了所合成的荧光聚合物的荧光性能。

Myriocin is a potent inhibitor of sphingosine biosynthesis by blocking the first enzyme in the pathway, serine palmitoyltransferase.

嗜热菌杀酵母素是一种有效的鞘氨醇生物合成抑制剂，能阻止合成途径中第一个酶——丝氨酸软脂酰转移酶。

Generally, the main point of this thesis rests with exploring novel hydrothermal methods to synthesize functional stannate composite oxides nano-materials, and studying the formation and morphology controlled mechanism of the composite oxides nano-materials under hydrothermal conditions. The main research achievements are summed up as follows:(1)According to the testing needs of photocatalytic hydrogen-generation, we have designed and set up a suit of photocatalytic H2-generation equipments with external light irradiation.

本文正是在这一背景条件下，重点研究以水热法合成锡酸盐纳米光催化材料，并对合成出的样品进行了细致的表征分析，初步研究纳米材料的光催化活性，探索纳米催化剂的颗粒尺寸、形貌和晶体结构对催化性能的影响规律，其内容主要包括以下几个方面：(1)根据光催化制氢的需要，设计并组建了一套外置光源照射的光催化制氢装置。

The antimony doped tin oxide nanoparticles were synthesized at 240℃for 17 h by the complexing hydrothermal oxidation method using stannate, antimony white and sulphuric acid as the starting materials, sodium hydrotartrate as the complexing agent and hydrogen peroxide as the oxidant. The resulting powders were characterized by means of differential thermal analysis, infrared spectrometry, X-ray diffraction and transmission electron microscope. The mechanism of the preparation of ATO powder was investigated as well.

摘 要：以锡酸钠、锑白和硫酸为原料，酒石酸氢钠为配合剂，双氧水为氧化剂，采用配合水热氧化法在水热氧化温度为240℃和水热保温时间为17 h时，合成单分散性的蓝色锑掺杂二氧化锡粉末，用差热分析、红外光谱、X射线衍射和透射电镜对所制得的粉末进行表征，并对ATO纳米粉体的配合水热氧化合成机理进行探讨。

The antimony-doped tin oxide nanoparticles were synthesized at 240℃ for 17h by the complexing-hydrothermal oxidation method using stannate, antimony white and sulphuric acid as the starting materials, sodium hydrotartrate as the complexing agent and hydrogen peroxide as the oxidant. The resulting powders were characterized by means of differential thermal analysis, infrared spectrometry, X-ray diffraction and transmission electron microscope. The mechanism of the preparation of ATO powder was investigated as well.

以锡酸钠、锑白和硫酸为原料，酒石酸氢钠为配合剂，双氧水为氧化剂，采用配合－水热氧化法在水热氧化温度为240℃和水热保温时间为17h时，合成单分散性的蓝色锑掺杂二氧化锡粉末，用差热分析、红外光谱、X射线衍射和透射电镜对所制得的粉末进行表征，并对ATO纳米粉体的配合－水热氧化合成机理进行探讨。

The antimonydoped tin oxide nanoparticles were synthesized at 240 ℃ for(17 h) by the complexinghydrothermal oxidation method using stannate,antimony white and sulphuric acid as the starting materials,sodium hydrotartrate as the complexing agent and hydrogen peroxide as the oxidant.

以锡酸钠、锑白和硫酸为原料，酒石酸氢钠为配合剂，双氧水为氧化剂，采用配合水热氧化法在水热氧化温度为240℃和水热保温时间为17 h时，合成单分散性的蓝色锑掺杂二氧化锡粉末，用差热分析、红外光谱、X射线衍射和透射电镜对所制得的粉末进行表征，并对ATO纳米粉体的配合水热氧化合成机理进行探讨。

The antimonydoped tin oxide nanoparticles were synthesized at 240 ℃ for(17 h) by the complexing hydrothermal oxidation method using stannate,antimony white and sulphuric acid as the starting materials,sodium hydrotartrate as the complexing agent and hydrogen peroxide as the oxidant.

以锡酸钠、锑白和硫酸为原料，酒石酸氢钠为配合剂，双氧水为氧化剂，采用配合水热氧化法在水热氧化温度为240℃和水热保温时间为17 h时，合成单分散性的蓝色锑掺杂二氧化锡粉末，用差热分析、红外光谱、X射线衍射和透射电镜对所制得的粉末进行表征，并对ATO纳米粉体的配合水热氧化合成机理进行探讨。

The significance of synthetic staple fiber s for the nonwovens industry and the manufacture of the two most important synthetic staple types for nonwovens are summarized.

概述了合成短纤在非织造工业中的意义及非织造工业中应用最广泛的两种合成短纤的生产。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失