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更低的噪音控制，就是加装具有吸音效果的消音箱。
The more low noise control, is the sound-absorbing effect with the censored box.
youdao
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音箱毛毯有阻燃效果、不阻燃效果。
The sound-box felt may be made with or without flame-resistant effect.
youdao
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音箱毛毯有阻燃效果、不阻燃效果。
The sound-box felt may be made with or without flame-resistant effect.
youdao