词典释义：
n.（话筒、扬声器的）声反馈
I AFS acoustic feedback speaker
声反馈扬声器
The acoustic feedback even howling is a well-known problem in sound reinforcement system.
扩声系统中普遍存在由声反馈导致的啸叫问题。
The acoustic feedback even howling is a well - known problem in sound reinforcement system.
扩声系统中普遍存在由声反馈导致的啸叫问题.
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