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Keywords: Second order,nonlinear,differential equation with damping,oscillation二阶,非线性,阻尼微分方程,振动性
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In this paper, we present some criteria for the oscillation of a class of the second order nonlinear differential equations with damping. The results generalize the known results of Cecchi M and Marini M (Rocky Mount J Math 22 (1992), 1259-1276).