A little apart from the surf ace, the longitudinal wave beam may exist and propagate parallel to the surface, yet has to connect with its corresponding gliding irrotational waves.
离开固体表面稍远的区域，可以有平行于表面传播的纵波声束存在，但是需要与相应的滑行集散波相互衔接。
A little apart from the surf ace, the longitudinal wave beam may exist and propagate parallel to the surface, yet has to connect with its corresponding gliding irrotational waves.
离开固体表面稍远的区域，可以有平行于表面传播的纵波声束存在，但是需要与相应的滑行集散波相互衔接。
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