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US08208652B2 Method and device for acoustic sealing 有权
声学密封方法和装置

Method and device for acoustic sealing
摘要:
Acoustic reflective devices are provided. An acoustic reflective device is configured to be inserted into an orifice. The device includes a stressing device that can vary a volume in response to a voltage difference across a portion of the stressing device. The stressing device is at least partially surrounded by a membrane.
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