According to the elastic thin plate theory and vibration theory, a boundary element method (BEM) was used to analyze the frequency characteristics of a thin plate in lateral free vibration.

根据弹性薄板理论和振动理论，运用边界元法(BEM)分析了薄板弯曲自由振动的频率特性。

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There is a considerable overlap between Wegener's concepts and the later widely embraced plate tectonics theory.

魏格纳的概念与后来被广泛接受的板块构造理论之间有相当大的重叠。

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In the theory of elastic thin plates, the bending of a free rectangular plate on the elastic foundation is also a difficult problem.

在弹性地基上的自由矩形板的弯曲，在弹性薄板理论中也是个难题。

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By the 1960s, scientists had developed a theory called plate tectonics explaining the locations of volcanoes and other large-scale geologic features.

BBC: The Pacific 'Ring of Fire'