区间图 meaning in English

interval graph

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。