We derived a set of mathematical formulas for describing the third-order nonlinear optical process in polydiacetylene crystals.
我们建立了一套描述聚丁二炔晶体中的三阶非线性光学过程的数学公式。
As sinter is a typical time varying and nonlinear system with large delay time, it is difficult to describe the whole process using a mathematical model.
烧结是一个典型的时变、非线性、大滞后的系统，很难用一个确定的数学模型去描述整个过程。
Based on a typical time varying and nonlinear system with large delay time, it is difficult to describe the whole process using a mathematical model.
基于复杂工艺过程的时变、非线性、大滞后的系统，很难用一个确定的数学模型去描述整个过程。
Starting from excitonic model, we derived a set of mathematical formulas for describing the third - order nonlinear optical process in polydiacetylene crystals.
从激子模型出发，建立了一套描述聚丁二炔晶体中的三阶非线性光学过程的数学公式；
The nonlinear characteristics of power network planning model is pointed out in the paper. the mathematical method and process of linearizing the original planning model is given.
本文指出了电力网规划模型固有的非线性特性，以及对其实施线性化的数学方法和过程。
A large system of sparse linear and nonlinear algebraic equations is the typical form of mathematical models of process design and steady state process simulation.
大型稀疏代数方程组是稳态过程模拟与过程设计数学模型的典型形式。
A large system of sparse linear and nonlinear algebraic equations is the typical form of mathematical models of process design and steady state process simulation.
大型稀疏代数方程组是稳态过程模拟与过程设计数学模型的典型形式。
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