unstable solution meaning in English

不稳定解

Firstly , the integral - differential equation described the radiation field evolution is derived , and then the instability of its solution is also investigated analytically . by using the perturbation and iteration method , the threshold detuning and threshold linear growth rate of the unstable solution are analyzed and discussed in detail
首先，建立了一个描述辐射场演化的积分一微分方程，解析分析了系统解的不稳定性，并采用线性方程解的微扰迭代方法进一步对系统不稳定解出现的失谐量阈值和线性增长率阈值等作了详细讨论。
In this paper , dynamic stability of parametrically excited flexible cam - follower system on the weakly nonlinear condition is investigated by using the combination of both the method of multiple scales and the technique of fourier series expansion . the equations of approximate transition curves in the plane of the dimensionless frequency and excitation ( amplitude ) parameter that separate stable from unstable solution are derived
随后，本文采用多尺度法并结合fourier级数展开，分析了不同的凸轮从动件运动规律和不同的凸轮的升程、停程以及回程的时间分配规律下，无间隙的周期时变凸轮系统模型的稳定性，获得了各种规律下的凸轮系统的稳定区间图。