工作介质

First, the potassium bearing food, such as coarse grains, potatoes, nuts, banana, chufa, apricot, orange and milk, these foods are very help in relieving the brain fatigue and make the nerve transmitter work normally.

一种是含钾元素的食品：钾元素可直接连通大脑神经，可使大脑神经介质正常有序地工作，确保大脑轻松，粗粮、土豆、坚果、香蕉、荸荠、杏、柑橘、牛奶等富含钾元素。

In the works mentioned above, we take some coupled effects into account, including the coupling between the FGM structures and elastic media or compressible fluid, the coupling between mechanical and thermal fields and the coupling between mechanical and electric fields.

在上述工作中，本文考虑了多个耦合因素，包括结构与弹性介质的耦合、圆柱壳与流体的耦合；力场与温度场的耦合、力场与电场的耦合。

In the working conditions does not contain the strong corrosiveness and the flammable explosive medium.

工作环境中不含强腐蚀性及易燃易爆介质。

The method is suitable for accurate measurement of the high performance radome dielectric loss.

提出了一种测量天线罩介质损耗的方法，对其工作原理、测试程序及测量误差作了论述和分析。

In this thesis, digital speech coding technologies are studied with the purpose of implementing underwater digital speech communication.

由于水介质的吸收使得水声信道可利用的工作频率较低，信道带宽较窄，因此通信速率较低。

Basing on the research of LHMs, this thesis focuses on the study and applications of LHMs to antennas.The first part is the design of double negative frequency selective surfaces.

本论文以异向介质为研究背景，研究其在天线方面的应用，主要工作包括以下三个部分：本文第一部分设计具有双负频带的频率选择表面。

The paper analyzes historical influence in studying of traditional earthquake forecast of earth tide, and compares geohysical charactistics of earthquake forecast with that of Geodyuamics by earth tide in vibrating frequency, measure of volume of vibrating source and transmit distance. It emphasizes that the setting up of fundamental conception is the most important in earthquake forecast by earth tide.

本文分析了现行固体潮地震研究中的历史影响，对比研究了固体潮地震预测研究和固体潮地球动力学研究二者在振动频率、振动源体积、传输距离与介质等方面的地球物理特点与本质区别，强调了固体潮地震预测研究中最根本的工作是建立地震预测的目标和基本概念。

Interesting works include three parts,(1) deriving an elastic strain energy equation to discuss constitutive relations of various elastic symmetry systems, and to check out some errors in previous papers.(2) deriving effective elastic constants of EDA-PTL medium;(3) deriving and numerically studying the elastic wave rays angle dispersion phenomenon.

除了引用前人给出的公式外，本论文有特色的工作是：推导了一个应变能公式，给出了各种对称体系下的弹性本构形式，对前人给出的结果作了验证，指出存在的个别错误；对EDA构成的薄层介质各向异性弹性常数作了推导，给出了解析表达；对几种类型的各向异性体系的角散式进行了推导并作了数值计算。

It is solved by means of the Fourier expansion and Hankel transform. A general solution is got on the cylindrical coordinates.

自从Biot[1，2 ] 建立饱和多孔介质本构关系和运动方程以来，人们已经作了大量研究工作[3 ，4，5] 。

The stress corrosion cracking experiments were conducted using SUS 304 L stainless steel WOL samples in 3.0% NaOH solution by mass fraction at 280℃in order to study the anti-stress corrosion performance of PD-201 hydrogenator made of SUS 304 L stainless steel of purified terephthalic acidplant during alkaline washing without stopping production.

通过用SUS304L不锈钢制作的楔形张开加载预裂纹试样，在280℃、质量分数为3.0%的NaOH溶液的条件下进行应力腐蚀试验，以模拟对苯二甲酸装置的加氢反应器PD-201不停车碱洗工作过程中SUS304L不锈钢在该介质环境下的抗应力腐蚀性能。

John Robbins lives with his family in Santa Cruz, California.

约翰罗宾和家人居住在加利福尼亚州的圣克鲁斯县。

The international background is mainly the economic ties among different nations tented to be widen and deepen at the peace and development times.

国际背景主要是和平与发展时代条件下的世界各国经济贸易联系的日益加深。