介

The relative complex permittivity of Starch/Polyvinyl alcohol blend sample was measured with short circuit coaxial line method in different water content and ion concentration .

采用短路同轴线法测量了淀粉聚乙烯醇共混体样品，在含水率、离子浓度不同时的复介电常数，研究了频率、离子浓度、含水率与相对复介电常数的关系。

Zone-D is composed of relict late Pleistocene delta sand with high contents of oxidized tests, high abundance and percentage of foraminifera and ostracoda and high percentage of carbonate.

晚更新世末期三角洲粒径较粗，有孔虫和介形类的氧化壳含量较高，有孔虫和介形类的丰度和含量也较高，CaCO3的含量较高，与现代三角洲形成明显的对照。

Esoporous Al MSU X aluminosilicates have been prepared through a two step route using preformed zeolite like nanoclusters and TX 100 as the inorganic source and mesostructure directing agent respectively, and characterized by XRD, HRTEM, N 2 adsorption desorption isotherm, 27Al MAS NMR, NH 3 TPD and so on.

SU X介孔材料是具有三维"wormhole like"孔道特征，且它采用廉价、无毒和可降解的非离子表面活性剂于弱酸性或中性介质中合成的，与使用季铵盐阳离子表面活性剂为模板剂的其它介孔材料相比，无论在合成过程或应用方面都有诸多优势[1 ，2 ] 。

A prototype microfluidic dielectrophoretic chip for cell separation and concentration based on principle of DEP was presented in this paper.

基于介电电泳原理，设计并制作了一种新型的能够用于细胞分离和富集的微流控介电电泳芯片。

It is showed that the properties of CMK-3 mesoporous carbon molecular sieve synthesized by hard template method have great influence on Ru dispersion. Higher specific surface area and appropriate pore size distribution is advantageous for sufficient dispersion of Ru on the supports.

采用固相热分解方法成功的合成了介孔氧化铬材料，考察了反应的温度、反应时间、前驱体和表面活性剂配比以及表面活性剂的种类等制备条件对纳米介孔氧化铬材料结构性能的影响。

The invention relates to an improved MCM-41 mesoporous molecular sieve and a preparation method thereof, in particular relates to a dual-metal-atom improved MCM-41 mesoporous molecular sieve and the preparation method thereof.

本发明涉及一种改性MCM-41介孔分子筛及其制备方法，特别是涉及一种双金属原子改性MCM-41介孔分子筛及其制备方法。

As a kind of non siliceous mesoporous material, mesoporous metal oxides have potential application in industrial catalysis, photoelectronic, solar cell and so on.

作为一种非硅基介孔材料，介孔金属氧化物在工业催化、光电领域及太阳能电池等领域有着潜在的应用价值。

We got the simple and high accurate eigenvalue equations and cutoff frequency formulae of all propagation modes. Second, to the optical fiber with homogeneous cladding, we defined the "permittivity ratio", and we got the simple and high accurate connection of cutoff frequency to the ratio. Third, to the fiber with inhomogeneous cladding, we analyzed the dispersive and power-frequency characteristics.

第二，对于具有各向同性包层的弱渐变光纤，引入了介电比，找到了精度高且形式简洁的截止频率对折射率参数的依赖关系；第三，对于具有各向异性包层的弱渐变光纤，首次通过包层的轴向与横向的介电常数比分析了该类光纤的色散和功率特性。

In the last part of the thesis, synthesis of mesostructured titania has been explored with a selfassembly of hydrophilic polymer and anionic surfactant used as template, along with titanium alkoxide as inorganic precusor. The product was proved to have mesostructure and the fiber and spherical morphology is favored.

本文最后一部分首次探索以亲水性高分子和阴离子表面活性剂形成的自组装体为模板、烷氧基钛为无机原料合成介相结构氧化钛；产物具有介相结构，其颗粒形貌为纤维和圆球的混合物。

The studies on dielectric relaxation, dielectric nonlinearity and electrically tunable mechanism on barium stannate titanate ferroelectric ceramics are of both academic and practical importance.

以钛锡酸钡陶瓷为研究对象，开展铁电陶瓷的介电弛豫、介电非线性以及电场可调机理的研究具有重要的学术意义和应用价值。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。