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  数学模型
    Based on qualitative analysis,the observational data of compression stress metre in a concrete dam have been analyzed quantitatively in this paper by mathematical mode.
    在定性分析的基础上,通过建立数学模型,对某混凝土坝压应力计观测资料进行了定量分析。 分析表明:该混凝土坝压应力计实测资料基本上能反映出坝体测点部位混凝土压应力状况;
短句来源
    Secondly, with the theory and methods of partial differential equation, this dissertation proves generalized solutions for the state equation of mathematical mode and the existence and uniqueness of the regularity of adjoint state equation, laying the mathematical theoretical foundation for the discussion of seepage system control, which is illustrated in Chapter III and IV.Thirdly, with optimal control and method of J.
    其次,本文利用偏微分方程的理论和方法,证明了数学模型的状态方程广义解、弱解及伴随方程正则解的存在唯一性,为下一步讨论系统的最优控制问题奠定了数学理论基础. 这是第3章和第4章的内容。
短句来源
    The nonlinear water resource time delay control mathematical mode is first set up by considering that the systems are composed of river basin、lakes and diversion works. Stability,optimal control and suboptimal control of the model are discussed. The computational algorithms and results by analysis are provided.
    首次建立了一个由流域、湖泊及引水工程等组成的非线性水资源时延控制数学模型 ,讨论了该类系统的稳定性、最优控制、次优控制等理论 ,最后给出次优控制的数值计算及结果 .
短句来源
  数学模型
    Based on qualitative analysis,the observational data of compression stress metre in a concrete dam have been analyzed quantitatively in this paper by mathematical mode.
    在定性分析的基础上,通过建立数学模型,对某混凝土坝压应力计观测资料进行了定量分析。 分析表明:该混凝土坝压应力计实测资料基本上能反映出坝体测点部位混凝土压应力状况;
短句来源
    Secondly, with the theory and methods of partial differential equation, this dissertation proves generalized solutions for the state equation of mathematical mode and the existence and uniqueness of the regularity of adjoint state equation, laying the mathematical theoretical foundation for the discussion of seepage system control, which is illustrated in Chapter III and IV.Thirdly, with optimal control and method of J.
    其次,本文利用偏微分方程的理论和方法,证明了数学模型的状态方程广义解、弱解及伴随方程正则解的存在唯一性,为下一步讨论系统的最优控制问题奠定了数学理论基础. 这是第3章和第4章的内容。
短句来源
    The nonlinear water resource time delay control mathematical mode is first set up by considering that the systems are composed of river basin、lakes and diversion works. Stability,optimal control and suboptimal control of the model are discussed. The computational algorithms and results by analysis are provided.
    首次建立了一个由流域、湖泊及引水工程等组成的非线性水资源时延控制数学模型 ,讨论了该类系统的稳定性、最优控制、次优控制等理论 ,最后给出次优控制的数值计算及结果 .
短句来源
  数学模式
    According to the principle of continuity of efficient local flow and fully considering the influencing factors, a formula of scouring depth around spur dike is built; this formula has an explicit mathematical mode and physical conception.
    由此根据有效局部水流连续原理 ,建立了丁坝坝头冲刷深度计算公式 ,该式涉及因素较全面 ,公式建立过程中所使用的数学模式清晰 ,物理意义明确 .
短句来源
  数学模型
    Based on qualitative analysis,the observational data of compression stress metre in a concrete dam have been analyzed quantitatively in this paper by mathematical mode.
    在定性分析的基础上,通过建立数学模型,对某混凝土坝压应力计观测资料进行了定量分析。 分析表明:该混凝土坝压应力计实测资料基本上能反映出坝体测点部位混凝土压应力状况;
短句来源
    Secondly, with the theory and methods of partial differential equation, this dissertation proves generalized solutions for the state equation of mathematical mode and the existence and uniqueness of the regularity of adjoint state equation, laying the mathematical theoretical foundation for the discussion of seepage system control, which is illustrated in Chapter III and IV.Thirdly, with optimal control and method of J.
    其次,本文利用偏微分方程的理论和方法,证明了数学模型的状态方程广义解、弱解及伴随方程正则解的存在唯一性,为下一步讨论系统的最优控制问题奠定了数学理论基础. 这是第3章和第4章的内容。
短句来源
    The nonlinear water resource time delay control mathematical mode is first set up by considering that the systems are composed of river basin、lakes and diversion works. Stability,optimal control and suboptimal control of the model are discussed. The computational algorithms and results by analysis are provided.
    首次建立了一个由流域、湖泊及引水工程等组成的非线性水资源时延控制数学模型 ,讨论了该类系统的稳定性、最优控制、次优控制等理论 ,最后给出次优控制的数值计算及结果 .
短句来源
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  mathematical mode
We propose a mathematical mode of these materials and apply it to the analysis of the influence of interface microdefects on the characteristics of free oscillations of the composite.
      
An N-dynamics Model for Predicting N-behavior Subject to Environmentally Friendly Fertilization Practices :I - Mathematical Mode
      
Mathematical Mode of Thought in Architecture Design Education: A case study
      
The semi-random source, defined by Sántha and Vazirani, is a general mathematical mode for imperfect and correlated sources of randomness (physical sources such as noise dicdes).
      
The mathematical mode including signal transmission, summing, receiving and recovering are established respectively.
      
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Water resource systems can be regard as a complicated large system composed of the natural subsystems and the artificial subsystems. It takes the designed constructed water resource engineering as a controller installed on natural systems, and accounts for time delay factors. The nonlinear water resource time delay control mathematical mode is first set up by considering that the systems are composed of river basin、lakes and diversion works.Stability,optimal control and suboptimal control of the model...

Water resource systems can be regard as a complicated large system composed of the natural subsystems and the artificial subsystems. It takes the designed constructed water resource engineering as a controller installed on natural systems, and accounts for time delay factors. The nonlinear water resource time delay control mathematical mode is first set up by considering that the systems are composed of river basin、lakes and diversion works.Stability,optimal control and suboptimal control of the model are discussed. The computational algorithms and results by analysis are provided. [

水资源系统是由水资源自然分系统和人工分系统合成的复杂大系统 .把设计修建的水资源工程视作安装于自然系统上的一个控制器 ,同时考虑当前状态量与时延量的制约关系 .首次建立了一个由流域、湖泊及引水工程等组成的非线性水资源时延控制数学模型 ,讨论了该类系统的稳定性、最优控制、次优控制等理论 ,最后给出次优控制的数值计算及结果 .

In this paper, the relation between the stress on the surface of hydraulic concrete and the corresponding wear is analyzed when the hydraulic concrete was impacted by the high speed water jet with sand. The different stresses on the hydraulic concrete surface due to different impact conditions can result in different wear mechanisms. When the impact angle of the water jet is small, the shear stress on the surface plays a main role, the wear mechanism is graze, similar to the wear of plastics. In this case...

In this paper, the relation between the stress on the surface of hydraulic concrete and the corresponding wear is analyzed when the hydraulic concrete was impacted by the high speed water jet with sand. The different stresses on the hydraulic concrete surface due to different impact conditions can result in different wear mechanisms. When the impact angle of the water jet is small, the shear stress on the surface plays a main role, the wear mechanism is graze, similar to the wear of plastics. In this case the wear is slight and can be described by a proper mathematical mode. With the increase of the impact angle of the water jet,the tensile stress on the surface gradually takes the main role, and the wear presents finally the indentation damage mechanism as in brittle materials, and the wear process is more complex,resulting in serious wear.

文章分析在高速含沙水流冲击作用下 ,水工混凝土表面受力状况与磨损的关系。水工混凝土壁面在不同冲击条件下 ,由于受力状态不同而产生不同的磨损机制 ,小角度冲击 ,表面切应力起主要作用 ,磨损类似于塑性材料的表面划伤机制 ,磨损相对较轻 ,可以用合适的数学模型描述。随着冲击角度的增大 ,接触表面的拉应力逐渐起主要作用 ,磨损最终呈现脆性材料的压印破坏机制 ,磨损过程较为复杂 ,磨损严重。

Based on the flow structure of the spur dike head, the mode of flow of pressing circumfluence is proposed. According to the principle of continuity of efficient local flow and fully considering the influencing factors, a formula of scouring depth around spur dike is built; this formula has an explicit mathematical mode and physical conception. And through the comparisons between the resutts with this formula and the field and experimental data, it shows this formula has good adaptability and practicability....

Based on the flow structure of the spur dike head, the mode of flow of pressing circumfluence is proposed. According to the principle of continuity of efficient local flow and fully considering the influencing factors, a formula of scouring depth around spur dike is built; this formula has an explicit mathematical mode and physical conception. And through the comparisons between the resutts with this formula and the field and experimental data, it shows this formula has good adaptability and practicability.

基于丁坝坝头水流结构 ,提出了坝头绕流挤压流动模式 ;由此根据有效局部水流连续原理 ,建立了丁坝坝头冲刷深度计算公式 ,该式涉及因素较全面 ,公式建立过程中所使用的数学模式清晰 ,物理意义明确 .经野外及室内资料验证表明 ,计算与实测结果较为吻合 ,具有较好的适应性

 
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