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Based on the Berkhoff elliptic mild slope equation and a series of boundary conditions, the model is used to effectively simulate irregular bathymetry and different frequency wave propagation so that a preconditioning program which can obtain optimal meshes in terms of different bathymetry and wave length is developed in this paper.

以Berkhoff提出的椭圆型缓坡方程为控制方程和一系列边界条件为基础，对地形变化的区域和频率不同的多向不规则波进行计算。

The main achievements of the project are as follows: 1 the hypothesis that a decrease in seed mass causes an increase in mean dispersal distance has been tested based on the experiments of weed dispersal by wind. The experimental results partly support the hypothesis. The results will help farmers to make an optimal strategy of weed control; 2 a statistic method for inferring probabilistic distribution function of a random variable has been developed, by which probabilistic distribution functions of weed species dispersal have been determined; 3 the reproduction structure of Bromus sterilis has been studied; 4 a more complex CA model with 25 neighborhood cells were built, which can simulate spread of a weed population. This work promotes developments in both theory and application of CA models; 5 the "mean law" in weed control has been proposed. Accordingly, the algorism of patch spring may be calibrated; 6 the "patch" and "true patch" have been mathematically defined so that herbicide can be efficiently applied; 7 simulation validates that initial configurations of weed will affect dispersal of its population and strategies of controlling it, or its distribution patterns affect its dispersal progresses.

主要完成的工作和取得的成果有：1）用实验证实了重量较轻的杂草种子并不一定飞得比较重的远，其结果有助于农民制订杂草的优化控制策略；2）发展了一种推断随机变量分布函数的统计方法并用它来获得了几个杂草种的扩散分布函数；3）对杂草Bromus sterilis的繁殖结构进行了研究；4）建立了一个具有25邻的较复杂的能模拟杂草扩散的CA模型，并在理论和应用方面促进了CA模型的发展；5）在杂草控制方面提出了&平均法则&，据此可对按块施药方法进行校正；6）精确地定义了&块&和&真块&以便在杂草控制中能更有效地使用除草剂；7）模拟证实杂草种群的初始配置影响其扩散和控制策略，或者格局影响过程。

In order to study characteristics of the calciner, it is significant to simulate the three-dimensional flow in calciner with proper mathematical models.

为充分了解分解炉的性能，应用适宜的模型来模拟分解炉内部三维流场是很有意义的。

Artistry Time Defiance Intensive Repair Serum uses advanced biotechnology to simulate the T4 Endonuclease produced by natural marine algae, and applies capsulation technology to deliver essential nutrients deep down to the inner layer of the skin. It helps to provide a more effective skincare function, repairing and restoring damaged DNA cells in the skin and eradicating the root of ageing problems.

雅姿特效滋养活颜14以先进生化科技模拟天然海藻中具修补功能的T4酵素，运用微脂囊传送系统的技术，以胶囊携带活性成分进入肌肤深层，提供更深入、更快速的滋养效果，重建肌肤表皮和真皮中受损细胞的 DNA，让肌肤细胞健康再造，从根本杜绝肌肤老化问题。

The microstructure evolution, precipitation behavior of carbonitride as microalloying element and its effects on deformation induced ferrite transformation of mild steels with various Nb, V content were investigated on a Gleeble 1500 thermechanical simulator through multi-pass thermo-compression in the temperature range of 820~790℃ to simulate the finish rolling process of plates.

在Gleeble 1500热模拟机上，通过820~790℃温度范围内的多道次热压缩变形模拟了中厚板的精轧工艺，考察了不同铌、钒含量的低碳钢的组织演变过程、微合金元素的碳氮化物的析出行为和对形变诱导铁素体相变的影响。

As the big circumrotate machine, steamer unit have enormous influence, but because of complexity in the configuration and system of steamer unit, particularity of the running conditions、 steamer unit often malfunction and bring bad influence ,specially the shafting .The experimental equipment is developed to simulate the rotator vibration.

汽轮机组作为大型旋转机械，在电力工业中发挥着举足轻重的作用，但是由于汽轮机组结构和系统的复杂性、运行环境的特殊性，汽轮机组的故障较高，且危害也较大，特别是汽轮机组的轴系是出故障较频繁的部件之一。

A model used to simulating the deposit thickness overlapped by the deposit profiles of multiple circumrotate cycles was established. This model was applied to simulate the deposit thickness with different pitch of the deposit track, and the optimum condition of movement parameters was obtained under which homogeneous deposit surface can be prepared.

建立多旋转周期沉积轮廓叠加的单层沉积厚度模型，利用该模型在不同沉积轨迹螺距下，对沉积厚度进行计算仿真，获得保证均匀沉积面的运动参数优化条件。

Comparing with real engineering, analyze the experiment and simulation results, the conclusion is that the mixture model can simulate the flow field of gas-liquid two-phase well; the effect of plain plug flow aeration is better than circumvolve plug flow aeration's; for the same plug flow aeration , the effect of 20m/s aeration is better than 10m/s's and

结合实际工程的运行，对实验结果及模拟结果进行对比分析，结论为：采用混合模型能够很好的模拟曝气池内气液两相流的流场；平移推流式曝气比旋转推流式底层曝气的曝气效果好；在同种曝气方式，相同工况下，20m/s的曝气速度的曝气效果要比10m/s、30m/s的曝气速度的曝气效果好。

When the combinable heavy multi-axis trailer with full load smoothly runs on the straight road,simulate the lifting process of the hydraulic suspension system,get the max pressure of the suspension components,make its three-dimensional model.

在拼接式重型多轴挂车满载匀速直线行驶工况下，对其液压悬架系统举升过程仿真，得到悬架构件的最大受力，建立其Pro/E三维实体模型，进行有限元计算和结构分析，提出改进措施。

In order to simulate the transmissions of vector-borne diseases and discuss the related health policies effects on vector-borne diseases, we combine the multi-agent-based system, social network, mirror identity concept, and compartmental model to develop an epidemic simulation model.

此篇论文结合多代理人系统、人际接触社会网络、社会分身点概念、仓室模型等建模方法，发展一套适合用来模拟病媒性传染疾病的传播动态与探讨相关的公共卫生政策的成效的流行病电脑模拟模型。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。