The mathematical physical model is established depending on the conventional laser heat treatment technology, the partial differential equation of heat current propagation is derived.
本文以常规的激光热处理工艺为基础，建立相应的数学物理模型，导出热流传导的偏微分方程。
The impulse response method is adopted to identify the modal parameters, and the physical parameters are estimated from the characteristic equation of the mathematical model built.
本文采用了单位脉冲响应函数法识别模态参数，由所建数学模型的特征方程识别结合部的物理参数。
The mathematical adjoint equation. not the physical adjoint equation, is required for nodal method, but it is rather too difficult to solve the former.
对于节块法，需要的是数学共轭方程，而不是物理共轭方程，但数学共轭方程求解比较困难。
The interweave resistance of plain cloth is analysed theoretically and the relative physical model and mathematical equation are proposed in this paper.
从理论上分析了平纹织物的交织阻力，提出了相应的物理模型和数学方程序。
The snag mechanism is analysed for plain - knitted fabric with proposed physical model and mathematical equation of snag processing. A new testing method is designed and results are introduced.
从理论上分析了纬平针织物钩丝的力学规律，提出了相应的物理模型和数学方程序，设计了新的钩丝测试方法。
Heat transfer equation is a kind of basic mathematical-physical equation. The thermal diffusivity is an important thermal physical parameter for soil.
传热方程是一类常见的基本数学物理方程，热导率是土体重要的热物理参数。
Heat transfer equation is a kind of basic mathematical-physical equation. The thermal diffusivity is an important thermal physical parameter for soil.
传热方程是一类常见的基本数学物理方程，热导率是土体重要的热物理参数。
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