Intensity distribution in photoresist is analyzed during ldw exposure process in terms of the improved theoretical model and the method of selecting the optimal exposure is described . results of ray - tracing using zemax that is optical design software agree well with the calculated results of theoretical model and l dw experimental results verify the accuracy of the model . therefore this improved model is important significant for directing ldw research 本文完善了激光直写光刻理论，分析了直写曝光中胶层内光场的分布，探讨了最佳曝光量的选择方案，利用zemax软件进行光线追迹的结果和理论模拟十分相近，实验结果验证了理论模型的正确性，该理论模型对激光直写光刻技术研究具有重要指导意义。
In this thesis commercial software fluent5 was used to implement numerical simulation because it could in more detail and comprehensive display the distribution of the flow field in the channel and in the holes and the experimental results could be consummately enlarged . at last , the experimental results were contrasted and analyzed with the numerical ones 本文还利用商业软件fluent5进行了数值模拟计算，数值计算可以更详细更全面地展现通道内以及孔内流场的分布规律，更加丰富和完善了实验测量结果，并将实验结果和数值计算结果进行了对比分析。
The agreement is also within the uncertainty when being compared with the alanine and cta film dosimeters made by jaeri . in addition , this dosimetry system is used to measure field and depth - dose distribution curves for 12mev electron beams , which shows it ' s suitability and practicability for electron beam irradiation 另外，还利用该剂量体系对12mev电子束辐照场的分布及深度剂量分布进行了实际测量，得到了与cta和fwt60等薄膜剂量计相一致的结果，这也进一步说明该剂量体系在电子束辐照上的适用性和实用性。
The measurements including the jet and the suction needed to be carried out under different reynolds number and different velocity ratio . in course of experiments , a lot of experimental data and figures had been obtained and the distributions of the flow field had been revealed detailedly . furthermore , the discharge coefficients in hole had been measured 根据实验课题的要求，分别进行了喷射条件下和吸入条件下在不同的雷诺数及速比下的流场分布测试，获得了大量的实验数据和图形，较为详细地给出了其流场的分布情况以及孔内的流量系数。
In order to study the features of freeze - thaw settlement in the permafrost , in this paper a two - dimensional numerical model of deformation and stress fields in embankment is established , together with finite element method , to calculate the distributions of deformation and stress fields of the freezing soil in an embankment 摘要为了研究冻土的冻胀特性对公路路基稳定性的影响，建立了冻土路基变形场及应力场的二维数值计算模型，并应用有限元法求解路基土体冻结时变形场和应力场的分布规律。
In this paper , temperature field and thermal stress of baise 6aa roller compacted concrete gravity dam section are calculated and analyzed , and the distribution laws of the temperature field and the thermal stress field during construction and operation of 6aa dam section and its foundation whose top is made of f6 fault concrete tuck , are mainly studied 本论文通过百色碾压混凝土重力坝6aa坝段温度场和温度徐变应力场的仿真计算分析，主要研究6aa坝段及基础部位f6断层混凝土塞施工期及运行期的温度场和应力场的分布规律。
In order to promote the population of the new technology , hecad software was developed by thermal energy research center of zhengzhou university . as a 2d cad drawing software , it realized the automatic design of process design , mechanic _ al design , components design and assembly drawing design of thelfsf . however , along with the development of software and hardware and the evolvement of design thought , not only 2d drawing but also 3d solid modeling is needed in modern design of heat exchang _ er ' s parts Hecad系统在零部件二维图形和总装图的自动化绘制上取得了很大成就，但随着计算机软硬件技术的发展和设计理念的演变，在对换热设备零部件进行二维设计的同时，需要机械产品的三维实体模型，而且在零部件三维模型基础之上，设计者可以对设计模型进行工程有限元分析，得到其工况下的真实温度场和应力场的分布，以便使设计者能及时对零部件模型的设计缺陷进行修改和优化，最终设计出性能合格、重量较轻的理想产品。
The areas from higher temperature to lower temperature are old industrial estates , new industrial estates , old city zone , new city zone and the suburb . it is also found that land cover affects directly the upper ground temperature , so heat - island affection may be weaken through protecting the existing water body and increasing the greenbelt of the city 结果显示武汉地区热场的分布具有明显的规律性，区域平均温度的分布由高到低为：旧型工业区?新型工业区?老城区?新城区?郊区；城市地面结构对于区域温度有直接的影响；保护现有的水体和增加绿地的覆盖是缓解城市热岛效应的有效途径。
Meanwhile , the soft - field characteristics of ert systems in different numbers of electrodes are studied , and the main soft - field characteristics of ert systems are found . the results show that the soft - field characteristics are greatly reflected in the influence of distribution of mediums and the difference in conductivity of two - phase mediums on the distributions of the sensitivity field 最后研究了当电极数目不同时对ert软场特性的影响，得出了ert传感器软场特性的规律： ert传感器的“软场”特性主要体现在其灵敏场的分布受被测介质的分布及两相介质电导率差值的影响。
Presents a method for sfs based on model of polyhedron . we carry out the algorithm by solving a overdetermined linear equations which is constructed through the distributing of the vector field . the algorithm can reconstruct 3d surface from photometric stereo image given the direction of illumination 针对目前“从明暗恢复物体形状方法”存在的问题，提出了以多面体模型为基础的快速算法，根据向量场的分布建立关于物体表面深度信息的超定线性方程组，在最小二乘意义下求得物体表面的深度值。
