机译:三阶非线性延迟微分方程的振动
School of Science Shandong Jianzhu University Ji''nan 250101 Shandong PR China;
School of Science Shandong Jianzhu University Ji''nan 250101 Shandong PR China;
School of Science Shandong Jianzhu University Ji''nan 250101 Shandong PR China;
nonlinear differential equation; delay; third-order; oscillation;