层

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。

Model is the relative data which is the internal property of Object;View is external presentation form of Model, one Model can correspond to one or more View, View also possesses the function of alternating with environment;Controller is the relating ligament of Model and View, Controller picks up the external information transmitting from View and transfers to corresponding event and the update the Model.

其中MVC 设计模式分离了数据和控制，增强了框架的模块性；采用了分布式组件技术，提高了软件重用性；采用了多层的思想，把表示层、商业逻辑层和数据库层分立开来，便得系统的移植性和重用性得到了加强。

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

The contribution of some sensitive factors such as the average inclination angle of all components belonged to rice and LAI was a...

得到了薄层水体和土壤背景的一次反射辐射以及在冠层内部、薄层水体和土壤表面相互间的多次反射辐射随水稻各组分平均倾角的变化规律，冠层双向反射率随叶面积指数LAI的变化特征

Based on the laminate theory, a laminate weakened by damage is treated as an anisotropic thin plate. Using the complex potential method in the plane theory of elasticity of an anisotropic body, the series solution of finite anisotropic thin plate containing an elliptical inclusion is proposed with the help of Faber series. A hybrid element with an elliptical inclusion for anisotropic materials is obtained by using the hybrid variable principle, and the element efficiency is verified by numerical examples. The state of the damage is modeled by an elliptical soft inclusion, and using the point stress criterion based on characteristic curve and Yamada-Sun etc. criteria, the prediction of the strength of a composite laminate with damage is set up. The effects of various parameters on the stress distribution and the residual strength of a composite laminate weakened by damage are detailedly studied.

首先基于经典层板理论，将复合材料层板的弹性问题化归为均匀各向异性板来求解；采用各向异性体平面弹性理论中的复势方法，以Faber级数为工具，给出了有限大含椭圆核各向异性板弹性问题的级数解形式；利用杂交变分原理，成功导出含椭圆核各向异性板杂交应力有限元，并用算例验证了该单元的可行性和有效性；采用含刚度折减椭圆形弹性核的冲击损伤模型，引入基于特征曲线和Yamada-Sun破坏准则的点应力判据，建立了含损伤复合材料层板剩余强度的分析方法；通过数值计算详细讨论了各种几何参数对损伤层板应力分布、剩余强度的影响，得到了一系列对工程应用具有实用价值的结论。

The Ed1 sequence develops ascending and falling cycle in this area; the Ed2 sequence mainly develop the falling cycle; and Ed3 sequence develops ascending and falling cycle; the Ed4 sequence mainly develop the ascending cycle.

其中，Ed1层序在全区呈对称分布；Ed2层序主要发育下降半旋回；Ed3层序旋回对称明显，全区均有分布；Ed4层序在研究区内主要发育上升半旋回。

A method was designed to conquer difficulty and reduce errors of measuring thickness of the barrier layer.

本文设计的"双层法"使两层阻挡层合而为一，能有效克服阻挡层厚度测量中的困难并减小测量误差，为AAO模板阻挡层厚度的测量提供了一种新的有效的方法。

For multilayer packaging, functional barrier layer was able to efficiently delay migration and assure food safety.

对于多层复合包装，阻隔层可显著减缓污染物层内化学物向食品的迁移，从而达到保证食品安全的目的，阻隔层厚度LR影响阻隔功效。

Based on STEP standard and IDEF method, on the basis of function layer, product information model and its structures with three layers (i. e. function layer, generic part layer, generic structure layer) were built.

基于STEP标准和IDEF产品建模方法，提出了基于功能层的产品信息建模和产品信息模型的三层结构：功能层、广义零件层和广义结构层。

Microscopic characteristics of cladded crystal fiber are analyzed by X-ray diffraction, Laue X-ray diffraction and scanning electron microscopy, it is found that magnesium-ion indiffusion does not affect the single crystal structure and the domain structure of the magnesium diffused crystal fiber. It is found for the first time that MgO-rich layer in the magnesium diffused LiNbO〓 surface layer exhibits the crystal structure of an unknown compound from the Li-Mg-Nb-O ternary system and MgNb〓O〓. It is proposed for the first time that this unknown compound and MgNb〓O〓 in MgO-rich layer are the real sources of magnesium-ion indiffusion LiNbO〓. Their appearance indicate that MgNb〓O〓 is in the surface layer of MgO-rich layer, the unknown compound is in the subsurface layer and beneath where the MgNb〓O〓 is located, and these compounds have obviously preferred orientation.

通过镁离子内扩散法，首次在国内实现了具有阶跃和抛物折射率分布的c轴LiNbO〓单晶光纤和a轴Nd：MgO：LiNbO〓单晶光纤的芯—包层波导结构，为我国在该项目的研究填补了空白；建立了晶纤损耗的测量系统，提出了利用单模石英光纤作为晶纤入射光耦合器的思想；通过对晶纤损耗的测量，得到了包层晶纤比未包层晶纤损耗降低约14倍的好结果，并实现了低次模传输：对经镁离子内扩散实现包层后的晶纤的微观特性，利用X射线衍射，劳厄照相和扫描电镜表征发现，晶纤并不因镁离子的内扩散而影响其单晶结构和镁的扩散层畴的变化。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐