intrinsically linear meaning in English

本质线性的

Now the subject of modeling and identifying various nonlinear systems has attracted many researchers . however , it is difficult for the classical identification methods based on the linear system or intrinsically linear system theory to provide satisfactory results
当前，对各种非线性系统的建模、辨识己引起人们的广泛注意，但是，使用建立在线性或本质线性系统基础上的传统辨识方法难以获得理想结果。