模型

In rough sets based on accessible relation, we merge rough set theory and accessible relation into one model. Compared with classical rough set models(including Pawlak rough set model and various precise rough set model), the new model is more general.

基于可达关系的粗糙集模型是将可达关系应用于粗糙集理论中，这种模型比传统的粗糙集模型(Pawlak模型和可变精度粗糙集模型)更一般，将粗糙集理论推广到一般的方法论。

Based on the long-term monitoring data of post-construction settlement of the loess subgrade of the Lanzhou-Wuwei Line Ⅱ,the quasi consolidation model was set up and contrasted with other models such as the Poisson model,index model, logarithm model and hyperbolic model.

利用兰武二线黄土路基工后沉降的长期观测数据，提出一种新的分析预测模型——似固结模型，并与泊松模型、指数模型、对数模型、双曲线模型的预测结果进行对比分析。

The paper researches two models for optimized management of slab-yard, and researches respective application about putting-in stock and model of taking-out stock. In the model of putting-in stock, the paper considered the cell of hot-rolling when making plan of putting-in stock, swings in the model of putting-in stock with the parameter 85, which indicates whether the slabs belong to the same hot-rolling cell. In the model of taking-out stock, The paper classed the slab-yard location according to the practice of the factory, based on which, the paper brings forward optimized turned-out algorithm founded on experts system, and the result of the experiments shows that the number of the turned-out pile is greatly reduced with the new algorithm.

文章重点研究了板坯库优化管理中的入库计划和出库计划编制问题，对两个决策模型：入库决策模型和出库决策模型进行了应用研究，其中在入库决策模型中，编制入库计划时就考虑了热轧工序轧制计划单元，在入库决策模型中添加&同一热轧单元&参数δ_5；在出库决策模型中，基于实际应用现场对板坯库库位进行分类，提出基于专家系统的板坯最优倒垛算法，实验结果表明提出的算法大大地降低了倒垛量。

The article presents the analysis of failure mode and effect and criticality analysis model,fault tree analysis model,tiger model,availabilitycenter inventory model and readiness-based sparing mod-el applied to navy ship's weapon system reliability engineering.

对舰船装备可靠性工程中的故障模式影响和危害度分析模型、故障树分析模型、舰队保障库存大纲模型、老虎模型、以可用性为中心的库存模型、以战备完好性为基础的备件配置法模型进行了分析。

An electromagnetic power steering kinematics model is built combined with the sensor and power equipment"s kinematics characteristic, then according to bond graph theory the bond graph model and diamond model of the electromagnetic power steering system are built based on the kinematics model. They could lead to the system"s transfer function, which is combined with automobile"s two freedom degree model, finally leads to the system"s model in condition with step input of steering wheel.

结合转矩传感器和电磁力发生装置的动力学特性建立了电磁式助力转向系统的动力学模型，然后在系统的动力学模型的基础上根据键合图理论建立了电磁式助力转向系统的键合图模型及其方块图模型，从而导出系统的传递函数，再结合二自由度汽车模型，最终建立了系统在方向盘转角阶跃输入下的模型。

Thermal hydraulics: actuation systems, power shift transmission systems, anti-lock braking systems, landing gear, fuel injection systems, active suspension systems, lubrication systems* Gas dynamics: pneumatics, propulsion, sterilization, air and steam cycles, high-pressure gas, gas transmission, adsorption, gas phase reactions, HVAC, ECS, multi-species gaseous systems* Multiphase fluids: refrigeration, air-conditioning, climate control, cryogenic piping networks, steam/water systems, or fuel systems with exotic, volatile fluids.* Systems control hardware and software evaluation data acquisition sampling rates, asynchronous communication, analog and digital electronic filters, control loop execution rates, network (CAN bus communication, etc.* Fuel cells: stationary or mobile.* Electrical systems: AC/DC machines, power electronics, batteries, etc. Flight dynamics, and control systems of all kinds including digital filters

MSC Easy5的独到之处在於：其一，强大的控制系统仿真分析能力，可以建立各种复杂的控制系统模型，包含稳态分析、线性系统分析、频域响应、根轨迹分析等完整的控制系统分析类型；其二，多学科专业应用库，借助专业应用库中的预定义模型元件，向用户提供独一无二的建立系统级模型和研究多学科系统耦合问题的能力；其三，卓越的代码生成和求解器，可以由图形化系统模型自动生成相应的FORTRAN或C源代码，这些代码可以通过编译生成可执行程序，并可被用户调用；其四，高效的高级建模和二次开发功能，方便用户创建用户化模型元件，并可调用外部FORTRAN或C子程序；其五，与其它CAE软件良好的集成能力，可以将不同CAE软件所建立的模型集成到MSC Easy5中建立完整的虚拟样机，是真正的协同仿真平台。

Thermal hydraulics: actuation systems, power shift transmission systems, anti-lock braking systems, landing gear, fuel injection systems, active suspension systems, lubrication systems* Gas dynamics: pneumatics, propulsion, sterilization, air and steam cycles, high-pressure gas, gas transmission, adsorption, gas phase reactions, HVAC, ECS, multi-species gaseous systems* Multiphase fluids: refrigeration, air-conditioning, climate control, cryogenic piping networks, steam/water systems, or fuel systems with exotic, volatile fluids.* Systems control hardware and software evaluation data acquisition sampling rates, asynchronous communication, analog and digital electronic filters, control loop execution rates, network (CAN bus communication, etc.* Fuel cells: stationary or mobile.* Electrical systems: AC/DC machines, power electronics, batteries, etc. Flight dynamics, and control systems of all kinds including digital filters

MSC Easy5的独到之处在于：其一，强大的控制系统仿真分析能力，可以建立各种复杂的控制系统模型，包含稳态分析、线性系统分析、频域响应、根轨迹分析等完整的控制系统分析类型；其二，多学科专业应用库，借助专业应用库中的预定义模型元件，向用户提供独一无二的建立系统级模型和研究多学科系统耦合问题的能力；其三，卓越的代码生成和求解器，可以由图形化系统模型自动生成相应的FORTRAN或C源代码，这些代码可以通过编译生成可执行程序，并可被用户调用；其四，高效的高级建模和二次开发功能，方便用户创建用户化模型元件，并可调用外部FORTRAN或C子程序；其五，与其它CAE软件良好的集成能力，可以将不同CAE软件所建立的模型集成到MSC Easy5中建立完整的虚拟样机，是真正的协同仿真平台。

In order to understand the operation safety and pipe service life span of rear superhearter, the essay established dynamic mathematic model of single piece of screen of rear superhearter, including the following sub-models: flue gas side model, steam side and metal pipe wall mathematic model, flow calculation model and wall temperature calculation model.

为了更好地了解后屏过热器运行的安全性和管子使用寿命，本文建立了后屏过热器中单独一片屏的动态数学模型，其中包括以下几个子模型：烟气侧模型、蒸汽侧和金属管壁的数学模型、流量计算模型和壁温计算模型。

The theory and methods of ship's hydrodynamic pressure field are also studied, including halfrotator model and shallow-water inferior-critical model.

深入研究了水压场建模的理论和方法，包括回转体模型和浅水亚临界模型，用实测数据对回转体模型和浅水亚临界模型进行验模，为不同条件下选择水压场模型提供了一定的理论依据，并在实测数据的基础上对模型进行了修正。

By comparing several turbulent models, standard k -εmodel , renormalisation -group k -εmodel, realizable k -εmodel, standard k -ωmodel, shear stress transport k -ωmodel, it can be concluded that the RNG k -εmodel predicts more realistic results than the other models used in the simulations.

比较分析Standard k -ε模型、RNG k -ε模型、Realisable k -ε模型、Standard k -ω模型及SST k -ω模型模拟缩放型喷嘴产生空化水射流流场，结果表明RNG k -ε模型更适合数值模拟缩放型喷嘴内的射流压力速度等分布状态。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失