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. 2017 Nov 30;14(12):1482. doi: 10.3390/ijerph14121482

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© 2017 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Contours of acoustic pressure of cavity under different frequency of Condition 6: (a) f = 0.55 Hz; (b) f = 1.50 Hz; (c) f = 2.25 Hz; (d) f = 3.00 Hz; (e) f = 7.00 Hz; (f) f = 15.00 Hz.

Contours of acoustic pressure of cavity under different frequency of Condition 6: (a) f = 0.55 Hz; (b) f = 1.50 Hz; (c) f = 2.25 Hz; (d) f = 3.00 Hz; (e) f = 7.00 Hz; (f) f = 15.00 Hz.