stiff differential equation meaning in English

病态微分方程
僵化微分方程

This paper discussed analytic solutions and numerical solutions of the stiff differential equations system with constant coefficients ( 1 ) , analytic solutions and numerical examples are given
摘要讨论了刚性常微分方程组( 1 )的解析解和数值解，给出了解的一般形式和应用该算法的数值例子。
This kind of simulation is a typical stiff system and the stiff integration method with variable order and step size should be applied . on the basis of analyzing the solution of stiff problems of the full dynandc simulation in essence , the gear method , a numerical integration method that is suitable to solve stiff differential equations is studied
在深入研究微分方程数值积分的基本理论和刚性微分方程的数值积分方法的基础上，本文根据微分方程的数值方法的收敛性和稳定性的基本理论，对适用于求解刚性微分方程的数值积分方法? ? gear法进行了深入的研究和分析。