后表面

The results show that:(1) The penetration resistance of functionally graded layered armour made of metal Matrix Composites is better than that of the Aluminum plate;(2) The penetration resistance of the functionally graded layered armour whichlay_up is 0%/57%/0%/26%/0%/12%/0% is the best;(3) The resistance penetration of the the functionally graded layered armour can be greately promoted through optimizing the lay_up and volume fraction of the reinforced particle;(4) The functionally graded armour in which the particles distribute continuous has better behavior of resistance penetration when the volume fraction of the reinforcements are constant;(5) The higher volume fraction of the reinforcements at the surface of FGM and the more non-homogeneous the reinforcements distribution, the higher thesurface Youngs Modulus and the flow stress are;(6) The behavior of penetration resistance of the functionally graded armour in which the particles distribute continuously is better than that of homogeneous steel plate;(7) The functionally graded armour provedes a important approach for the optimization and design of the resistance penetration;(8) The numerical results of simulation of the bird striking the aircraft structureshow that the finite element model of the balance leg is effective;(9) The numerical results show that the structure internal force is relative largewhen the bird strikes the top of the balance leg;(10) The process of the birdstrike is thaf.after the bird penetrting through the front skin of the balance leg and striking the front beam,the bird is broken up in three parts.

经过本文所进行的数值模拟后我们发现：(1)在层状梯度装甲板的抗侵彻过程中层状功能梯度板比铝板的抗侵彻性能好；(2)在层状梯度装甲板的抗侵彻过程中铺层顺序为0%/57%/0%/26%/0%/12%/0%的功能梯度装甲板的抗侵彻性能最好；(3)通过优化组合层状梯度板的铺层顺序以及增强颗粒的含量可以大大改善梯度板的抗侵彻性能；(4)当SiC颗粒体积含量一定时，增强颗粒连续分布的功能梯度板表现出了优越的抗侵彻性能；(5)增强颗粒连续分布的功能梯度板表面SiC颗粒体积含量越高，分布越不均匀，表面的弹性模量就越高，屈服应力就越高；畜此工业大学硕士研究生学位论丈(6)增强颗粒连续分布的功能梯度装甲板比匀质钢板表现出良好的抗侵彻性能；(7)功能梯度装甲板为整个抗侵彻性的优化设计提供了重要的途径。

The clearance angle is provided such that the tool will not rub the machined surface thus spoiling the surface and increasing the cutting forces.

后角 的作用是不使刀具与已加工表面摩擦，以免损坏表面和增加切削力。

For reconstruction from contours, this dissertation uses Active Contour Model to check the boundary contours. The algorithm can generate single, continuous and close contours quickly. For reconstruction from voxel, this dissertation presents an algorithm to trace the boundary contours from segmented regions based on Active Contour Model. The algorithm can trace the contours of inter and outer connected multi-regions correctly and accurately, and can prevent tracing from jumping out to the neighbor region, also can define the contour precision and contour key points actively as snake is growing up.

对于基于轮廓线的表面重建，利用主动轮廓模型（Active Model，又称Snake Model）来完成断层图象上目标轮廓的提取，可以获得单象素连通的封闭的目标边界轮廓；针对基于体素的表面重建中实施了分割后的体数据，提出了一种基于主动轮廓模型完成二值图象中轮廓跟踪记录的方法，可以对同属于重建目标的内外邻接多区域进行正确和准确的边界轮廓跟踪，使得在跟踪当前轮廓时不会跨越到相邻轮廓，且主动轮廓的精度可以根据参数交互决定，尤其是能够在主动轮廓成长的同时主动定义轮廓关键点。

Biodegradation and degradation kinetics of anion-surfactant in the anaerobic water of a representative inlet of Lake Dianchi under different incubation conditions were studied by the'river die-away'test method.

u SO6'Z#bW2N0表面活性剂是一类品种多样、用途广泛的精细化工产品，在人们的生产生活等很多领域中都有着不可替代的作用。经过50 多年的发展，特别是改革开放后20 多年的发展，我国表面活性剂工业发展迅速。

The bioactivity of titania coatings before and after modification were investigated by simulated body fluidtests in vitro.X-ray diffraction,Scanning electron microscope,Fourier transform infrared spectroscope and Energy diffraction spectroscope were used to investigate the microstr...

结果表明：氧化钛涂层和钛合金基体的结合强度较高，其值高达40MPa，涂层的耐模拟体液腐蚀性优于钛合金。酸和碱溶液表面改性后的氧化钛涂层经模拟体液浸泡可在其表面生成含有碳酸根的羟基磷灰石，显示良好的生物活性。

Microstructure observation, micro-hardness testing, scanning electron microscope observation, energy dispersive spectroscope and X-ray diffraction analysis were employed to investigate the structure and performance of the joints.After SSNCed for 5min by means of HESP, surface nanostructured layer about 70μm and 50μm thickness were obtained on the stainless steel and titanium alloy ends respectively.

文中对高能喷丸处理后的不锈钢和钛合金的纳米组织进行了表征；试验研究了不锈钢和钛合金表面层纳米组织的热稳定性；采用恒温恒压、脉冲加压对表面自纳米化0Cr18Ni9Ti不锈钢与TA17近α钛合金进行扩散连接；借助拉伸实验机、金相观察、显微硬度测试、扫描电镜观察、能谱分析、X-射线衍射等分析手段研究了表面自纳米化钛合金与不锈钢扩散连接接头的组织结构和性能。

Our company is equipped with the state-of-the-art manufacturing facilities and processing technologies introduced from Taiwan and Korea.At present,we are available with two sets of PVC calendaring production lines,two wet production lines, two paperpressing production lines and two double-head rollergrinders, as well as advanced embossing machines,natural luster finishing machines, polishing machines, transferring machi-nes and multipurpose surface finishing machines for the postal processing and surface treatment. These facilities and equipment are in sufficient capacity to produceand develop a wide range of artificial leathers and synthetic leathers.

引进台湾，韩国先进的设备和工艺技术，目前拥有两套PVC压延设备流水线，两台湿发生产流水线，两台套干型纸生产流水线，两台双头磨皮机，在后道加工，表面处理上有先进的压纹，烫光，抛光，转印，喷涂和多用表面处理机，适应生产和开发各类人造皮革，合成皮革。

On the one hand,PH_x(x=2,1) can insert into the Si-Si backbond at elevated temperature,and a surface Si=P or a subsurface Si_3P unit was formed via subsequent H_2 liberations.On the other hand,the PH_2 species adsorbed on the Si_r site may completely dissociate across the other two unsaturated adatoms,and P adsorbed on the Si_r site may desorb in P_2 gas form at high temperature.

一方面，在高温下PH_x(x=2，1)可插入Si-Sibackbond，继而经过脱H_2步骤形成表面Si=P单元或次表面Si_3P单元；另一方面，吸附在Si_r位上的PH_2也可能在相邻的另两个Si adatom上实现后两个P-H键的解离，在高温下，吸附在Si_r位上的P可能以P_2的形式脱附。

It is indicated that the carburized stainless steel can not only be restored to the original color of stainless steel and improved the surface quality, but also can keep a high hardness after being brightened using the optimized process parameters.

结果表明，采用优化后的工艺参数对渗碳不锈钢进行亮化处理，不但可以恢复不锈钢原有的颜色，改善其表面质量，而且硬化层的损失很小，不锈钢表面仍具有很高的硬度。

The electroformed copings and interfacial area were examined by SEM and EDS analysis. Results: Surface roughness increased by sandblasting, O content had not been greatly improved by preoxidation, the coping surface formed a porous structure after applying gold bonder. The gold and porcelain combined tightly, mechanical chimera and simple diffusion of Al, O elements were observed in interfacial area.

结果：喷砂可以增加金沉积表面的粗糙度，预氧化没有使氧元素含量得到很大提高，涂布金黏结剂后金沉积表面形成了多孔样的结构：金瓷结合紧密，可见明显的机械嵌合结构，金瓷界面出现了铝、氧元素的单纯扩散。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。