建立了正弦波纹扁球壳的非线性强迫振动微分方程；
The differential equations of nonlinear vibration of the shell were obtained.
通过研究一类高阶泛函偏微分方程边值问题的强迫振动性，建立了边值问题解的振动的充分条件。
The forced oscillations of boundary value problems of a class of functional partial differential equations are studied.
本文研究一类高阶泛函偏微分方程边值问题的强迫振动性。
In this paper we study the forced oscillations of boundary value problems of a class of higher order functional partial differential equations.
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