When the hydrodynamic front reaches the ambient medium it ACTS like a fast - moving piston.

当流体力学波阵面抵达周围介质时，它像一个运动迅速的活塞。

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Instead of pushing a traditional cone speaker from behind with a magnet, Edge Motion-driven speakers work with a thin, slightly curved membrane that is actuated along the edge area in a manner that creates an efficient, piston-like motion in front.

ENGADGET: Emo Labs becomes ClearView Audio, assures product unveiling at CES 2013