查询词典 boundary layer

They serve as a separation layer to form a stable boundary between layers of soil to maintain the integrity, character and performance properties of each layer.

土工织物相当于一个隔离层，在不同的土层之间形成稳定边界，以保持每层的完整性、固有特性以及使用性能。

Self-fluxing Fe-Cr-Ni-B-Si alloy prowders are laser clad on medium carbon steel substrate of dimensions 80×35×10mm〓. The investigation results of this clad layer are: micro-defects, micro-cavity and occluded forin substance, are the micro-cracks and crack resourses in clad layer; crack of coating propagates along the boundary of two kinds of eutectic sutructure; The included angle θ between the cracking direction and laser scanning direction in multitrack overlapping clad is smaller than that in one-track clad because of crack propagating along crystalline growth direction and crystalline direction in overlapping zone being different from it in one-track clad.

在调质态的45〓钢表面，采用预置粉末法进行FeCrNiBSi合金的多道搭接激光熔覆，对其熔覆层进行分析表明：多道搭接激光熔覆层裂纹扩展方向与激光扫描方向间的夹角θ与单道熔覆时相比明显变小，前者θ0°，后者θ角基本都为90°，这主要是因为多道搭接时，搭接区结晶方向发生了变化以及裂纹沿结晶方向扩展所致；激光熔覆层裂纹大多是以覆层与基材交界面的孔洞、熔覆层内不同方向共晶团间的显微缩孔、夹杂物的边界等三种显微缺陷作为裂纹源，并沿低熔点物相形成元素偏析造成弱化膜的共晶团界面扩展延伸。

In order to describe in detail the structure of mesoscale atmosphere circulation and its evolution, symmetry theory are extensively used in the past fifty years. A large number of wind tunnel and water tank experiments are practiced to reshow the physical process that often appear in the atmosphere and, to some extent, successfully explain many atmsophere circulation characters in surface layer. But because of the planetary reflection and small Re number deformation, these physical experiments can' t represent real conditions of the atmosphere, they also can' t distinct viscous boundary layer separation and non-viscous dynamical separation as well as show the circulation response to surface diurnal heating.

为了详细描述复杂地形区域大气中尺度环流的结构和特征，过去50年来人们广泛采用相似理论，利用风洞和水槽实验再现大气中的物理过程，并在一定程度上成功地给出了大气近地层的一些环流特征，然而由于边界层反射和小Re数形变作用的影响，物理实验的结果并不能真实地再现大气中的实际状况，尤其是不能正确区别边界粘性分离流场和大气非粘性动力分离气流，环流场对地形下垫面日周期热强迫的响应过程也难以再现。

In this thesis,the authors analyze the mechanism of roadway roof absciss layer ,point out the demerits of traditional methods of measuring roadway roof absciss layer , treatise the principles and put forward some methods of measuring absciss layer by minging vibration method.

分析了巷道顶板离层的机理，指出了传统测量离层方法的弊端，论述了采矿振动法测量离层的原理，提出了采矿振动法测量离层的方法。

When thecohesion and angle of internal friction is fixed ,the layer failure area becomessmaller with increase of shocrete layer's thickness.also the shotcrete layer has acritical thicknesswith the change of cohesion and angle of internal friction ofshotcrete'sinterface.

初喷接触面粘聚力和摩擦角强度一定时候，初喷破坏区随初喷厚度的增加而减少；接触面强度变化时，初喷存在一临界厚度；初喷破坏区主要集中在节理与洞周的相交处。

The specimens sintered under air atmosphere appear the obvious layering phenomenon, on the whole,and which can be divided into the surface protection layer, the center layer and the non-oxidized layer,SiAlON phase comes into being at about 1550℃,the crystal shape of them is columnar; The specimens sintered carbon reduction atmosphere have no obvious layering phenomenon, the formation temperature of SiAlON is about 1600℃, the crystal shape of them is acicular,fibriform or anomalous.

氧化气氛下，烧成的试样出现明显的分层现象，大致上可以分为表面保护层、中间层和非氧化层，SiAlON相的形成温度约在1550℃左右，多呈柱状；还原气氛下，试样无明显的分层现象，SiAlON相的形成温度约在1600℃左右，多呈针状、纤维状或不规则状。

Through the anatomy of seed, we proved that a semipermeable layer exists in S.sudanense which locates at the innerside of aleurone layer next to undifferential cells. This layer was permeable to water while inhibiting electrolyte leakage and uptake of lanthanum salt.

从解剖学角度证明了苏丹草种子存在半透层，该组织位于糊粉层内侧紧靠未分化细胞处，对水分通透性好，但阻挡电解质渗出和镧盐渗入。

Copy the layer style (right-click on layer and go to Copy Layer Style) and paste it over the rest. Also, create a large ampersand behind all the letters.

复制样式（在图层上点击右键-复制图层样式），复制到所有的字母图层，新建一层，键入一个大大的字母

Shadow effect can not be neglected for thermal analysis of spacecraft,Accroding to the angle between solar light and antenna orbit plane and its orbit location,analytical geometry method was used for accurately calculating solar radiation heat flux distribution of reflector surfaces.To analyze the temperature field under heat flux,the formulations of net radiation flux density between two gray elements and the net flux density of gray surface under external thermal flux were deduced.Based on the characteristic of space environment,the nonlinear temperature distribution in transverse direction of reflector shell self radiation were considered,the finite element formulations were given for orthogonal material layered shell by Galerkin method.A layered element including a inner heat source layer was proposed,and the finite element formulation expressed by DOF of the inner heat source layer were put forward with temperature and heat flux boundarys between adjacent layer.

单馈反射面赋形天线是未来星载天线发展的一个重要形式，分析了基于物理光学、几何光学和几何绕射理论的理想反射面辐射场；介绍了基于几何光学的反射面天线赋形方法；针对赋形过程中辐射场的快速分析要求，比较分析了基于物理光学的Fourier-Bessel和Jacobi-Bessel级数展开方法以及GB展开分析方法；利用GB展开快速分析方法在20GHz频率下对0.6m口径的天线进行赋形分析，实现中国大陆的30dB增益覆盖，通过数值计算研究了固定增益期望下的口径尺寸随频率的变化，以及频率为20GHz的不同尺寸天线赋形后的覆盖目标区域最大增益的变化情况。

With the help of scanning electron microscopy and X-ray angular dispersion analysis, it is found that the 8-YSZ films supported by p-Al2O3 are structurally composed of a dense surface layer (～10 μm in thickness) on top of the substrate, a uniform in-filling layer (～50 μm) just under the surface of the substrate and an immediate diffuse layer reaching as deep as ～250μm.

利用扫描电镜和X射线角散分析技术对所制备电解质薄膜/p-Al2O3样品进行了微结构测试和表征。

This is the inheritance of the tribe of the children of Issachar according to their families, the cities and their villages.

19：23 这些城并属城的村庄就是以萨迦支派按着宗族所得的地业。

I've have enough of your garbage.

我听了你的废话。