层的

Based on Reddy higher-order shear deformation plate theory and general von Kármán-type equations, the analytical solutions for free vibration and dynamic response of simply supported functionally graded plates with piezoelectric layers in thermal environments are described with double Fourier series, where temperature-dependent material properties are taken into account.

基于Reddy高阶剪切变形理论和广义Kármán 型方程，用双重Fourier级数展开法求得了热环境下带压电层的功能梯度复合材料混合层合板的自由振动及动力响应的解析解，分析中考虑了材料热物参数对温度变化的依赖性，讨论了环境温度和控制电压对固有频率及动力响应的影响。

as the process of campus network informatization speeding up continuously,an increasing number of schools built their own mail system which is available to both teachers and students. in addition to smtp session layer's anti-spam measures,surfcontrol e-mail information security gateway riskfilter is on the application layer, anti-spam engine asa integrates four anti-spam technology: digital fingerprints, heuristic analysis, semantic analysis and the internet threat database. many surfcontrol content security experts from all over the world maintain and update asa databases 365 x7x24 hours continually, and also it wouldautomatically updated four times daily, providing an accurate rate of 99.2 percent or more higher andbelow 0.1 percent rate of misjudgment of the spam filtering effect.

随着校园网信息化的进程不断的加快，越来越多的学校搭建了自己的邮件系统，提供给教师或学生使用，系统除了smtp会话层的反垃圾邮件措施，surfcontrol邮件安全信息网关riskfilter在应用层上，反垃圾邮件引擎asa集成了四种反垃圾邮件技术：数字指纹、启发式分析、语义分析和internet威胁库，由surfcontrol全球众多内容安全专家，365x7x24小时不间断维护更新asa数据库，每天自动更新4次，提供准确率高于99.2%、误判率低于0.1%的垃圾邮件过滤效果。

For one-dimensional ocean temperature model, we optimally determined the initial and boundary conditions and related model parameters through variational assimilation method along with inverse problem techniques using incomplete and complete observational data,so as to determine the variation of position of epilimnion which has influences on SST.

由于温跃层的变化对海表温度的影响，我们以简单的海温模式为例，采用变分同化技术及反问题的技巧，在局部和整体观测资料下，对初、边值条件和模式参数等进行最优估计，确定温跃层的位置及其变化规律。4。

Referring to OpenRouter model, we implement coordination service point by applying the hierarchical coordination model to the transceiver of messages, which facilitates open control. We build plugins-based router adapters based on symbol plugins and functional plugins, which separates control plane from the data plane and supports the dynamical extensibility of router functions.

参考OpenRo路由器模型，利用层次化协同模型实现了独立于数据层的控制平台CSP，奠定了开放控制的基础；基于功能插件和抽象插件构造了基于插件的路由器抽象层PRA，分离了控制与转发平面支持路由器转发平面功能的动态扩展；并举例说明了MER中高效的网络应用控制路由选择机制，体现了直接控制原理，有助于设==计更为复杂的控制策略！

Numerical tests are also conducted to investigate the microphysical effects to the mesocale convective systems. The evaporation of raindrops can strengthen the surface "cold pool" to decease the temperature of rainfall center. The condensation of vapor can lower the air pressure and increase the convergence and updraft so that the convective echo develops stronger. The melting of graupel can cool the air to restrain the convective activity. The falling of precipitation particles can increase the downdraft and induce the outflow nearly the surface. The effect of condensation is the most important among all the microphysical processes. It can change the whole structure of cloud system.

微物理过程对对流系统发展和维持有重要作用：强降水的雨滴蒸发过程会加强"冷池"效应，同时增强了雨带南侧原有的地面中尺度辐合线；凝结潜热在低层诱发了与回波相应尺度的中尺度低压，增强了辐合和上升运动，促进对流发展；霰的融化吸热通过冷却大气会不利于气压下降、气流辐合抬升等过程，降低对流不稳定能量，减缓对流发展；重力拖曳使气块冷却降温，降低对流不稳定能量，并且使低层的气压升高、气流辐散，在近地面附近产生出流，加强地面中尺度辐合线的强度。

The results show that the Ni-Fe coatings are acid-resistant to HNO3 and H2SO4.For Ni-Fe alloys without exfoliation,the EIS is composed by a capacitive arc at high frequency and an inductive arc at low frequency, and the radius of capacitive arc decreases rapidly and the inductive component weakens and disappears with time.

结果表明：Ni-Fe合金镀层具有良好的耐酸腐蚀性；在3.5wt%NaCl溶液中，腐蚀发生之前的镍铁合金镀层的电化学阻抗谱由一个高频容抗弧和一个低频的感抗弧组成；随着浸泡时间的延长，容抗弧半径快速减小，感抗弧减弱并消失。

The results prove that using the laser power P=1.7Kw, scanning velocity V=4mm/s, spot diameter D=3mm, cladding thickness T=0.6mm, 50%: 50% Ni60:Ni-Cr-Cr_3C_2 as laser cladding process can obtain the laser coating with lubricous tight surface, tiny dilution rate ,fining microstructure and higher micro hardness and fine metallurgical-bonding Interface.

试验结果最终证明，激光熔覆工艺参数对熔覆层的宏观形貌、微观组织及涂层性能有极大的影响，在激光熔覆工艺参数为功率P=7Kw，速度Vs=5mm/S光斑直径D=3mm，厚度T=0.6mm，50%；50%的Ni60；Ni-Cr-Cr_3C_2的条件下，所得到熔覆层表面光滑致密、组织细小均匀、稀释率小、硬度高且与基体实现了良好的冶金结合，证明这种方法是一种在提高热锻模寿命方面有前途的方法。

Then, using the reasoning matrix between the unit colors and individual colors of the polychromatic sets, the reasoning and generation of geometric tolerance types are achieved.

介绍了各层的意义和各层之间的关系，利用多色集合理论对该模型进行描述，通过多色集合统一颜色和个人颜色的推理关系矩阵，实现了计算机辅助形位公差类型的推理生成，为计算机辅助形位公差类型推理的进一步形式化打下了基础。

In this paper, the effects of thickness and flexibility of confining medium on laser shock strengthening and laser shock forming have been successfully investigated with different experimental method, and the relationship between the rigidity of confining medium and laser-induced shock wave was demonstrated.

用不同的实验方法研究了约束层的厚度和弹性与激光冲击强化效果和变形量的关系，进而说明约束层本身的刚性对激光诱导冲击波的影响。

Chapter 2 gives the structure design of the network sensor node 、 circuit diagram and PCB.

第四章讨论了无线传感器网络的数据链路层的功能，并且指出了存在于无线传感器网络中的通信问题，最后分析无线报警网络在链路层协议的控制下进行网络节点间的通信和网络通信中问题的解决。

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