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The solution of the audio and sound system of the stadium and Gymnasium
"Code for electrical design for civil buildings" (JGJ/T16-92) "technical specification for design of architectural intelligent system" (DBJ01-615-2003) "acoustics characteristic index of sound expansion system of hall and hall" (GYJ25-86) "acoustics design and measurement regulations of Gymnasium" JGJ-T131-2000
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