The motion of spherical pendulum in z-direction is described by nonlinear oscillation equation.
用非线性振动方程描述了球摆在 z 方向上的运动。
The new sufficient conditions for the oscillation of all solutions of the neutral differential equation with continuous and piecewise constant arguments are obtained.
获得了一类带有连续和分段常数变元的中立型微分方程所有解振动的新的充分条件。
Furthermore, the author gives the oscillation criteria of some partial difference equation with continuous variables.
此外，作者还给出了一类具有连续变量的偏差分方程的振动准则。
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