According to the experimental result , the relevancy formulae were proposed , and according to discrete particle model , particle velocity distribution model was proposed and the experimental result agreed with the calculated result 根据实验结果建立了固含率与固相速度不均匀度的关联式，并根据颗粒离散模型建立了颗粒速度分布模型，实验结果和计算结果吻合较好。
3 . based on continuous model and discrete model of control system , demo system of five - step ship gate control system is developed by means of visual basic 6 . 0 , which can show ship gate running to the life in the course of nature and at the time of fault 在以上连续模型与离散模型的基础上，采用visualbasic6 . 0开发出三峡五级船闸运行控制系统的仿真演示系统，能逼真地演示出船只在正常或故障时的过闸情况。
It is obvious that this model is a ideal model . in the second section , the discrete model is constructed that is based on the rule given in the first section . the analytic solutions of the mean lengths of the three queues are obtained by introducing the generating function 第二节在第一节给出的规则的基础上建立起离散模型，同样得到此规则下三个队队长的联合分布的母函数，最后求出了三个队平均队长的解析解
This paper puts forward a dynamic analysis method on belt conveyor through carefully study on belt conveyor system . the unified expression of conveyor belts " moving behavior has been obtained . the models contain the dynamic continuous one and the discrete one 本文通过对输送带的粘弹性特性进行了深入的研究，推导出了输送带运动特性方程的通用表达式，分别建立了带式输送机系统的动态连续模型和闭合回路的离散模型。
The abstract model provides the spatio - teniporal analysis database system ( stadbs ) with a basis having exact semanteme and distinct concept , while the discrete model is a kind of implementation design , which maps the abstract model into those computable data types in terms of finite sets 抽象模型为时空数据库管理系统? ? stadbs提供了一个语义精确、概念清晰的基础，离散模型则是一种实现设计，把基于无限描述的抽象模型映射为可在计算机中处理的数据类型。
There is only such report on the idi diesel engine by foreign countries according to my materials . 4 . firstly finished the improved curl model and combined with the turbulent model to set up a spray and combustive stochastic model of di diesel engine , using monte carlo method to simulate it 针对直喷式柴油机的特点，在国内首次完成了利用改进的curl碰撞?离散模型，并结合湍流模型建立了直喷式柴油机喷雾和燃烧的随机模型，并利用montecarlo法进行数值求解。
Basing on characteristic and request of virtual machining environment , the paper studies and makes the discrete data structure of model . the data structure can express exactly the gradual molding process of workpiece during the course of machining , and note corresponding machining information . so whole virtual production model system is formed 本文根据虚拟加工环境的特点和要求，还研究和制订了相应的离散模型数据结构，该数据结构能使产品模型在加工过程中稳定、准确地表示被加工件的逐步成型过程，并记录相关的加工信息，从而形成了完整的虚拟产品模型系统。
The mainly objective includes two parts : one is to develop the mathematical m odel t o study t he flow m echanism o f 1 iquid i n t he b ed of tbr , and the other is to study the technology and device to distribute the liquid uniformly . in the first part , some theoretical models were established to simulate the distribution of flow rate of liquid , such as discrete model , differential calculus model and stochastic model . but these models are difficult to calculate or ca n ' t lead to good results 在理论模型方面，前人提出了离散模型、微分模型和随机模型等来模拟液体的径向和轴向流率分布，但仍然存在许多问题，往往计算工作量大且常偏离实际情况，本文作者在导师的指导下，参照前人的研究成果，在滴流床的流率分布中采用了状态离散、时间离散的markov过程描述了滴流床的流率分布，结果与实验值吻合较好。
Based on the transient response , the control effectiveness of the visco - elastic dampers is further demonstrated . according to the lqr optimal control theory , clipped - optimal control arithmetic , and the modified bouc - wen model of the mr dampers , the lqr - clipped semi - active control is proposed . the passive , active , and semi - active control of the cables are analyzed by using the difference discretization model of the cable - dampers system 结合lqr最优控制理论、面向速度剪切( clipped - optimal )控制算法及修正的磁流变( nr )阻尼器bouc - wen模型，创新地提出了lqr - clipped半主动控制算法，应用拉索振动的差分离散模型，对斜拉索的面内振动进行了被动、主动及半主动控制研究，分析了mr阻尼器对斜拉索的振动控制效果。
