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引导声(外声) External Sound BNS 12

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引导声(外声) External Sound BNS 12 External Sound 引导声 (外声)  Swiftlet Sound System 燕声工程与音响


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引导声(外声) External Sound BNS 12

此燕声需具其特性,需要有强力的引导能力,方能有效把燕屋外部的燕群,引进燕屋内部。
External sound. Effective to attract and lead swiftlets into house.

共有多款成功外声:
Some of the successful external sound :
1. BNS 9
2. NTSG id 2 (2021 new sound)



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