In some recent tidal potentials, the amplitudes of the tidal waves include time terms, it means that the amplitudes are time dependent, so they can not be counted as fully harmonic developments.
一些现代引潮位展开的潮波振幅中包含时间项，即振幅具有时间依赖性，它们不属于完全调和展开。
Large amplitudes of cables can be induced by low order frequency harmonic oscillations. Then, some destructive accidents will happen, and some efficient control methods will be needed.
缆索结构系统在外部激励作用下将产生低频谐振，会导致大的振幅而可能有破坏性事故发生，故需要一种有效的方法控制这种振动。
应用推荐