特性表面

The surface electromagnetic is expanded in a polynomial function via the Chebyshev approximation , then the electromagnetic distribution can be obtained at any frequency within the given frequency range , which is used to compute the scattered fields and the wideband radar cross section .

论文摘要：将切比雪夫逼近理论应用于目标宽带电磁散射特性分析中，通过求解给定频带的切比雪夫节点并用高阶有限元方法求得各节点处的目标表面场值，实现整个频带内任一频率点目标表面场值的快速预测，使得目标电磁散射特性得到快速分析。

The produced water which was made by crude oil dehydration containing polymer, alkaline and surfactant, brought many technique problems in the water treatment process system, this made the polymer flooding and water flooding water treatment technologies difficult to suit to the disposal requirement of the special water. The developed experiment research indicated that: because of the surfactant, the semidiameter of the oil droplets in the ASP flooding is much smaller than that in polymer flooding, and the stability of the oil droplets is higher than that in polymer flooding, The viscosity and combine difficulty of the oil droplets increased, and all the changes of speciality resulted in the increased difficulty in the ASP flooding produced water disposal.

三元复合驱采出液经脱水后得到的采出水中，因含有聚合物、碱和表面活性剂，给采出水处理工艺系统带来了一系列的技术问题，使已经应用于水驱和聚合物驱采出水处理的技术难以适应这种特性的采出水的处理要求，已经开展的实验研究表明：三元复合驱采出水中由于表面活性剂的存在，使采出水中油珠的粒径远远小于聚合物驱采出水，油珠的稳定性明显大于聚合物驱采出水；由于聚合物的存在，采出水粘度增大，使油珠聚并难度增大，这些特性的变化造成三元复合驱含油污水的处理难度大于聚合物驱。

A computer-aided local transient flow property measuring system was developed using a high speed CCD camera coupled with optical fibers in order to study the Gas-liquid-solid three-phase jet loop reactors. SnO2 crystal films were orientally deposited on the alkoxysilane molecule-coated hydroxyl glass substrates so as to prepare surface-marked particles as the tracers. An image analysis system was established to identify different phases. Stroboscopic photography was utilized to extend the measure range. The developed measuring and analysis system was capable of determining accurately the local transient flow property in a G-L-S jet loop reactor. Based on the above system, local transient flow properties of gas, liquid, and solid phase were measured and studied the influences of fluid property, operation and configuration parameters on the reactor.

以气液固三相喷射环流反应器为研究对象，将高速CCD和光纤束耦合制成局部瞬态流动特性微机数据采集及图象处理系统，利用MPS硅烷分子在带有羟基的玻璃基底上的自组装引导SnO2晶态膜层在功能化表面上进行沉积，以获得表面标记的示踪粒子，解决图象处理技术与相的识别的问题，利用频闪技术拓展了测量上限，得到可以准确测定气液固三相喷射环流反应器中局部瞬态流动特性的测试系统；采用上述测试技术进行喷射环流反应器中局部气相、液相与固相瞬态流动特性的实验研究，并考察物性参数、操作参数与结构参数的影响规律。

An optical source usedto pump XeF laser is introduced.The discharge breakdown property,the current as afunction of charge voltage in different gas,the discharge homogeneity and the effect ofdifferent gas composition on the discharge radiation have been experimentally studied.

介绍了一种用以泵浦XeF激光的横向表面放电辐射源，比较详细地研究了这种泵浦源的放电击穿特性、放电电流与充电电压及不同气体介质的关系、表面放电均匀性以及不同气体成分对表面放电辐射特性的影响。

On the basis of previously research, this paper re-probe into the mechanism of electro-chemist mechanical manufacturing process, making the rational technological parameter, and developing the manufacturing equipment. Through a lot of technology tests, get a lot of labratory data, accordingly, researched the surface feature of the electro-chemist manufacturing process, and deeply discussed its influence on the work piece feature. The last result is that: the electro-chemist mechanical manufacturing process can reduce the low-frequency component significantly, but on high-frequency component, it has little influence, having obviously positive pole flat effect. After manufacture, the tip parts on the surface of the work piece is cut off, there is micro "high land" shape, the parameter for surface roughness is reduced a lot, the surface outline of the work piece is negative, the bearing length rate is cliffy. Also the surface quality of the work piece is improved. This can help to avoid changing the shape, improve the feature of rub, gear and reduce the time to suit. This would also ensure the precision and result in a longer work piece life.

在以前研究的基础上，本论文重新探讨了电化学机械复合光整加工工艺的机理，确定了较合理的工艺参数，对电化学机械复合光整加工设备进行了改进，通过工艺实验广泛地搜集了大量实验数据，依据实验数据，多角度地研究了电化学机械复合光整加工的表面形貌特点，并且从理论上深入讨论了电化学机械复合光整加工表面形貌对工件工作性能的影响，最后得出的结论为：电化学机械复合光整加工对工件原始表面的低频成分有较大程度的降低，而对高频成分影响较小，有明显的阳极整平作用，被加工工件表面的尖峰状凸起被去除，工件表面呈现出微观&高原型&，表面轮廓不平度高度特性参数大幅度降低，工件表面轮廓分布集中，且呈负偏态，轮廓偏斜度为负值，轮廓支承长度率曲线陡峭，工件的表面质量得到综合改善，这对提高零件的抗接触变形能力、改善摩擦、磨损性能、降低工件的磨合时间、提高工件的精度保持性、延长工件的寿命均有利。

A computer-aided local transient flow property measuring system was developed using a high speed CCD camera coupled with optical fibers in order to study the Gas-liquid-solid three-phase jet loop reactors. SnO2 crystal films were orientally deposited on the alkoxysilane molecule-coated hydroxyl glass substrates so as to prepare surface-marked particles as the tracers. An image analysis system was established to identify different phases. Stroboscopic photography was utilized to extend the measure range. The developed measuring and analysis system was capable of determining accurately the local transient flow property in a G-L-S jet loop reactor. Based on the above system, local transient flow properties of gas, liquid, and solid phase were measured and studied the influences of fluid property, operation and configuration parameters on the reactor.

中文摘要：以气液固三相喷射环流反应器为研究对象，将高速CCD和光纤束耦合制成局部瞬态流动特性微机数据采集及图象处理系统，利用MPS硅烷分子在带有羟基的玻璃基底上的自组装引导SnO2晶态膜层在功能化表面上进行沉积，以获得表面标记的示踪粒子，解决图象处理技术与相的识别的问题，利用频闪技术拓展了测量上限，得到可以准确测定气液固三相喷射环流反应器中局部瞬态流动特性的测试系统；采用上述测试技术进行喷射环流反应器中局部气相、液相与固相瞬态流动特性的实验研究，并考察物性参数、操作参数与结构参数的影响规律。

In order to study the effect of microstructure on the superhydrophobic solid surface for its drag reduction charactertics, micro-ridges grating structures on the basis of K9 glass flat surface were fabricated using femtosecond laser. Experiments were carried out to measure the rheological characterization of 40% glycerin solution on flat and grating structured K9 glass surfaces using AR-G2 rheometer respectively. Both surfaces were modified with trichloro perfluoroocty silane in drying oven.

为了研究超疏水固体表面的微结构对减阻特性的影响，首先利用飞秒激光加工技术在光滑K9玻璃基面上加工出微脊光栅结构，然后将光滑K9玻璃与光栅结构K9玻璃置于干燥箱内进行硅烷化处理，以降低表面自由能，最后用AR-G2流变仪测量两表面的流变特性，试验用流体为体积分数40%的甘油溶液和水。

The roughness shape of ceramic machining surface is analysed by four kinds of test methods: surface profile, scanning electron microanalyses, bearing ratio curve and profile ratio of peak to valley. Ceramics are machined by"plateau honing"to obtain the plateau property and wearability of machining surface. The machining surfaces own its functional surface.

采用表面微观轮廓、扫描电镜观察、表面支承长度率曲线以及表面轮廓峰谷比等四种研究方法，详尽分析了陶瓷材料加工表面的轮廓形状特征，并采用平顶珩磨加工方法，获得陶瓷加工表面的平顶特性，提高了加工表面耐磨性。

According to depositions of nanostructured silica in plants and chemically synthesized nanostructured silica sprayed into leaves and physical properties of leaf conferred by silica depositions as well, the first step reaction of high-specific supramolecular recognition process of fungi spores and host surfaces is discussed. Nanostructured silica can alter leaf physical properties including topography and hydrophobicity and affect extracellular matrix release and formations of germ tube, appressorium and penetration peg.

初步揭示了纳米结构SiO〓与植物真菌病害发生的关系：从化学合成的纳米结构SiO〓在叶表的沉积以及沉积之后赋予植物叶片独特的物理学特性入手，详细研究了纳米结构SiO〓抑止真菌孢子和寄主表面的高度专一性的超分子识别过程的第一步反应，从而提出纳米结构SiO〓可能改变植物叶表面原有的拓扑结构和疏水等物理学特性，即形成特殊的双亲性表面，影响真菌胞外物质的释放和芽管、附着胞及侵染钉的形成，阻断真菌孢子早期的侵染过程，从而确定靶向的真菌病害的控制措施。

To overcome the drawbacks in the weight and cost of the antenna with the corrugated soft surface, a new patch antenna with patch rings is designed. Its weight is about 1/4 less than the antenna with the corrugated soft surface and it is inexpensive. Good experimental results are obtained. The radiation pattern of the antenna is more rotationally symmetric, and a more reduction on the sidelobe levels of the antenna is achieved as compared to the antenna with the corrugated soft surface. In conclusion, in the present thesis both theoretical and experimental research works have been carried out intensively on patch antennas based on photonic-bandgap structures.

为了克服皱褶软表面天线份量重，加工费用贵等缺点，我们对空气介质的皱褶圆环结构软表面天线进行了改进，将周期分布的皱褶圆环平面化，并保持结构的软表面特性，设计出了一种新的平面圆环结构的软表面天线并进行了实验研究，加工的平面圆环结构天线比皱褶圆环结构天线重量减轻了约1/4，加工费用大大降低，所取得的实验结果显示，该平面圆环结构软表面天线的方向图的轴对称性得到了改善，在俯仰角从0°～-90°的范围内天线H面的波束与E面重合，与皱褶圆环结构相比，天线的旁瓣和背瓣受到了更大的抑制，E面方向图上+120°方向的旁瓣被明显削弱。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。