Even from a physical, acoustic point of view, discreteness must be more than an artifact.

即使从物理与声学的角度来看，语音的分离性也一定不止是假象而已。

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This is the physical fundament of acoustic vector signal processing.

这是声矢量信号处理的物理基础。

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The special chemical and physical environment arising from acoustic cavitation can provide a unique means for the preparation of novel materials with unusual properties.

声空化所引发的特殊的物理、化学环境为制备具有特殊性能的新型材料提供了一条重要途径。

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In 2008, Dr Cummer first described the theory of acoustic cloaking in an article in Physical Review Letters, and earlier this year a group from the University of Illinois Urbana-Champaign demonstrated the first practical use of the theory in an article in the same journal.

BBC: Acoustic 'cloaking device' shields objects from sound