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  1. ...and the stage is ideally designed with quality acoustic celing reflector and reverberation chamber with reflector doors to achieve perfect natural acoustics. Equipped with the...

  2. ...的假設成因: So a duck's quack certainly echoes around our reverberation chamber , so a duck's quack does echo. Which leads to the most...

    分類:科學及數學 > 生物學 2007年04月19日