In the oil - well monitoring system, the data transmission method using acoustical waves as carrier waves via the wall of oil pipeline can bring cost savings and reliability.

在油井监测系统中，以油管管壁作为信道的声波通信方法可以降低成本和提高可靠性。

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Equal in excellence to the 264-seat main theater but presenting a striking design contrast, this secondary screening room has a hot pink entrance and features exposed loudspeakers and a grey, perforated acoustical wall and ceiling surface, making it more of an exposed machine for the moving image.

ENGADGET: Museum of The Moving Image plans multi-million dollar updates with HD, 3D