送交者: 008 于 2014-04-08, 21:50:35:

回答: It changes the density of water, of course, that changes the frequency. 由 steven 于 2014-04-08, 21:03:29:

• Blah, blah, blah... (无内容) - steven (0 bytes) 2014-04-08, 23:18:45 (745694)

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