模型理论

According to rate process theory, slip theory of plasticity and principle of virtual work, the micromechanical model of soil creep are set up, the numerical solution of the model is given, the differences and similarilities between frequency distribution function of microplane and clay platelet are discussed and schematic computation flow of the model for fitting the test data of homogeneously stressed anisotropically consoildated clay specimens in an undrained creep test at constant volume are given.

以速率过程理论作为土质学与土力学间的桥梁，根据塑性滑动理论和虚功原理，从微观结构的角度，建立了反映粘性土宏观应力应变关系的微观力学模型，给出了微观力学模型数值解的近似表达式，讨论了微滑面与粘粒和团粒定向频率分布的异同，设计了一个拟合各向异性土不排水蠕变的计算流程。

Surely, the issue of legitimacy or non-legitimacy of a theoretical model of history as an important one. Yet its apodictic is not a matter of proving or disproving its internal epistemological logic.

当然，历史理论模型式否具有正当性确实是个重要的议题，只是这种明晰性并非由知识论的逻辑来证明或否证，相对的，『历史理论模型式否具有正当性』这样的议题，分析到最后，其实只是个政治议题。

Based on the current theoretical model of EDFA, an approximative model is presented.

2在已有的EDFA理论模型的基础上，推导了一种近似理论模型。

Objective: To asterin whether the tutor's experience prescription-Cooling vessel 791-2 granulae prescription can promote collateral vessel generatation and stimulate angiogenesis in severe hind limb ischemia animal model, in order to get a clear unstanding of the curative effect mechanism, so that providing theory foundation for clinical using.

目的：探讨导师经验方清脉791-2冲剂对肢体缺血动物模型的促血管生成作用及其疗效机理，为临床应用提供理论基础。目的：探讨导师经验方清脉791-2冲剂对肢体缺血动物模型的促血管生成作用及其疗效机理，为临床应用提供理论基础。

The problem how operators should apply customer club marketing strategy became the core issue of this thesis. This thesis reviewed the relationship marketing, customer relationship management and other related theories, and then built the implementing model of customer club marketing,customer club marketing value chain model, on the basis of CRM value chain theory by Francis Buttle.

本文回顾了关系营销、客户关系管理等相关理论，并在此基础上依据Francis Buttle客户关系管理价值链理论构建了客户俱乐部营销的实施模型——客户俱乐部营销价值链模型。

Based on centroplasm theory of Wu ZhongWei and continuous compact coordinate theory of Liu ChongXi, professor Wang LiJiu devises concrete framework model, that is coarse aggregate are accumulated most closely with some coordination form by mechanical mixing, vibrating and gravity and form the concrete structural frame, then the mortar is used to fill up the air gap, bond and strengthen the coarse aggregate and make a whole body with strength.

以吴中伟的中心质理论和刘崇熙的连续包围垛密理论为基础，王立久教授提出混凝土架构模型，所谓架构模型是指粗集料在机械搅拌、振捣和重力作用下，按照一定的配位形式最紧密堆积构成混凝土骨架，砂浆填充粗集料的空隙，进而粘结龛固粗集料，形成一个具有强度的整体。

The design of transplanter for rice growing in cupulate tray is the critical link in rice growing in cupulate tray technology,the design method is not mature,for exploring a new design method,having discussed neural network s serviceability in agriculture machinery mechanism design with the theoretical basis of self-organizing feature mapand the back-propagation network,the integrated SOM-BP nerve network model is applied in the field of transplanter s critical mechanism design for rice growing,al...

水稻钵育栽植机的设计是实现水稻钵育栽培技术的关键环节，区别于传统的水稻栽植机其关键部件的设计方法还不成熟，在理论研究方面还不完善。为探索新的设计方法，论述了神经网络算法对农业机械设计的适用性，以自组织特征映射网络SOM 和误差反向传播网络BP为理论基础，将SOM-BP集成神经网络模型应用于水稻钵育栽植机关键部件设计领域，建立神经网络模型，通过集成网络训练，得到设计结果。验证了SOM-BP神经网络在农业机械机设计中的正确性和精确性。

Yield rule, intensify rule, fluxion rule, types of contact and diathermanous model of metal cutting were also analyzed detailedly.

本文在直角自由切削过程分析的基础上，讨论了金属切削过程中的弹塑性变形理论和温度场理论，详细分析了屈服准则、强化准则、流动准则、金属切削传热模型、接触类型等问题，并利用有限元的基本思想，建立了直角自由切削应力场和温度场的有限元模型，进行了状态非线性、材料非线性和几何非线性的热力耦合分析，重点研究了切屑分离标准的确定、表面接触类型的处理等问题。

Based on the analysis of the process of free orthogonal metal cutting, the theory of elastic-plastic distortion and temperature field was discussed. Yield rule, intensify rule, fluxion rule, types of contact and diathermanous model of metal cutting were also analyzed detailedly. The FEA model of stress field and temperature field of free orthogonal metal cutting were established by the fundamental idea of FEA. State nonlinear, material nonlinear and geometry nonlinear thermal-stress coupling were analyzed by FEA technology. The separate criterion of chip and dispose of contact types were research emphatically.

本文在直角自由切削过程分析的基础上，讨论了金属切削过程中的弹塑性变形理论和温度场理论，详细分析了屈服准则、强化准则、流动准则、金属切削传热模型、接触类型等问题，并利用有限元的基本思想，建立了直角自由切削应力场和温度场的有限元模型，进行了状态非线性、材料非线性和几何非线性的热力耦合分析，重点研究了切屑分离标准的确定、表面接触类型的处理等问题。

It can be employed to transmit torque by the shear stress of MR fluids.In this paper,the design method of the disc-shaped magnetorheological fan clutch is investigated theoretically.The expressions of the torque and the output rotational speed within the fan clutch is derived to provide the theoretical foundation in the discal design of the clutch.A Bingham model is used to c...

将磁流变液用于发动机冷却系风扇离合器的设计中，在理论上分析了盘式磁流变液调速风扇离合器的工作机理，应用B ingham模型来描述磁流变液的本构方程，建立了离合器的输出转矩与转速的计算模型，导出了离合器基本几何参数的工程设计计算公式，为盘式磁流变风扇离合器的设计提供了理论依据。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。