[電學] 減少噪聲 noise reduction: 減噪; 降噪技術(shù); 降噪系統(tǒng); 消聲; 噪聲減低; 噪聲減少; 噪聲降低; 噪聲消減; 噪聲抑制; 噪音減弱; 噪音抑制noise abatement; noise reduction: 減聲noise reduction noise control: 噪聲控制level of noise: 噪聲度; 噪聲級; 噪音值level, noise: 噪聲水平下載手機詞典可隨時隨地查詞查翻譯