Revision history of "Translations:Dictionary:Acoustic wave equation/2/zh-hans"

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  • (cur | prev) 17:35, 29 December 2017Lx (talk | contribs). . (105 bytes) (+105). . (Created page with "<math> \frac{\partial^2 P}{d x^2} = \left(\frac{\rho}{k}\right) \frac{\partial^2 P}{\partial t^2} </math>")