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For every mode of Lamb waves, the magnitude of phase velocity between the two models has the turning point.

3对于Lamb波的每个模式，煤粒负载模型相速度与单层模型相速度的大小关系存在一个转折点。

By using Galerkin's method the partial differential equation is reduced ordinary differential equation with quadratic nonlinearity. The results of qualitative analysis indicate that the system has homoclinic orbit.

定性分析表明，对于前屈曲和后屈曲两种情况，系统的相图具有相同的同宿轨道，只是位置在相平面上沿横轴发生了一个简单的平移。

With decreasing the grain size of austenite before the phase transformation, the transformed ferrite fraction is increased and the final grain size is refined.

在应变、过冷提供相变驱动力的条件下，相变前奥氏体晶粒尺寸对于铁素体微观结构的形成有着重要的影响。

The formulation for the contact force between two spheres and the stress and displacement which is caused because of the contact force is also derived. The calculation method of the contact of sphere and plane, sphere and tee is given .At the same time, the formulation for the force distribution of the contact surface is established on the discussion of two arbitary elastomer's contact.

第二章以《弹性力学》理论为基础，详细地介绍了接触单元理论，导出了两个球体之间的接触压力及由此引起的应力和变形，给出了球体与平面相接触、球体与球座相接触的计算方法，同时，对于两任意弹性体接触的讨论，得到了接触面上压力分布的公式。

In the survey geothermy unusual area, specially or has the hot spring distribution regarding the shallow layer geothermy the area, so long as coordinates with other technical methods, unifies with the specialized knowledge and the expert thought versatilely obtains the good application effect.

在探测地热异常区，特别是对于浅层地热或有热泉分布的地区，只要与其它技术方法相配合，与专业知识及专家思想相结合完全能取得好的应用效果。

Especially for kw_0≥30, the results coincide with each other verywell. By expanding the exact solution, it can be seen clearly that the zeroth order term is just the paraxial one, so the paraxial approximation field is good enough to replace the exact field when the beam width is large to some extent.

结果表明对于腰宽仅有几倍波长的强聚焦高斯光束，低相速度区仍然存在，并且低相速度区分布的规律与近轴近似场结果在本质上是一致的。

To establish a MPLC method for the content determination of resveratrol in Polygonum cuspidatum Sieb. Et. Zucc, Analytical column SOURCE 5RPC ST 4.6/150 was used with a mixture of acetonitrile+water (30+70,volume ratio ) as mobile phase ,with a flow rate of 1ml/min and the UV detection wavelength was 306nm, The linear range was 0.6-1.6mg/ml (r=0.9919). The average recovery of prodatin was 103.0%-90.4%(RSD=7.21%). The method is convenient and accurate. Result indicated a reverse phase chromatography media based o n polystyrene/divinyl benzene has excellent resolution for resveratrol in cuspidatum. P rovide theoretical support for process development.

色谱条件采用SOURCE 5RPC ST 4.6/150预装柱，以乙腈/水(体积比30/70)溶液为流动相，流速1ml/min、检测波长为308nm，结果表明，白藜芦醇在0.6～1.6mg/ml的浓度范围内峰面积积分值与浓度的相关系数r=0.9919；所测定的虎杖饮片中白藜芦醇平均含量为0.304％，平均回收率为103.0％～90.4％；实验表明，以聚苯乙烯为基架的反相介质对于虎杖中自藜芦醇具有良好的分辨率，适合其有效成分的检测、分离，对虎杖中白藜芦醇制备的科学研究过渡到工艺开拓有很好的借鉴。

Based on theories of multiphase fluid mechanics and mine ventilation theories,the model of drivage tunnel was established by using the method of similar experiment,the characteristics of ventilating current and gas concentration distribution in drivage tunnel were studied by the experiment,and based on the above characteristics the flow characteristics of gas transportation multiphase flow field were majorly analyzed.

基于多相流及矿井通风理论，利用相似性实验方法，搭建了煤矿掘进巷道模型，并通过模型实验获得了掘进巷道内风流流场和瓦斯浓度分布场的特征信息。结合上述两方面的特征信息重点分析了巷道内瓦斯运移多相流场的流动特性，所采用方法对于矿井通风系统及瓦斯监测系统的设计具有较强指导意义。

Factors of sample temperature,adsorption time and desorption time on the SPME treatment of seeds of Foeniculum vulgare Mill were investigated.

考察了萃取样品温度、萃取纤维吸附时间及解吸时间对于固相微萃取的影响，确定了固相微萃取小茴香挥发性成分较佳的实验条件为：萃取样品温度60℃，萃取纤维吸附时间40min，脱附温度250℃，脱附时间5min。

The effect of Markov chain models in reservoir modeling is much concerned recently, but models are usually applied to simulating categorical attributes, such as lithofacies, sedimentary facies and subfacies, and very few to continuous attributes, such as porosity, permeability and oil saturation.

Markov链模型在储层随机建模中的作用越来越受到关注，但其多用于类型属性(岩相、沉积相、沉积亚相等)的模拟，对于连续型属性(孔隙度、渗透率、含油气饱和度等)的模拟还比较困难。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了