Parabolic loudspeaker (Q7133736)
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parabolic-shaped speaher producing coherent plane waves
Language | Label | Description | Also known as |
---|---|---|---|
English | Parabolic loudspeaker |
parabolic-shaped speaher producing coherent plane waves |
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- enwiki Parabolic loudspeaker
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- commonswiki Category:Parabolic loudspeakers