短語詞組短語loud -speaker aperture 機箱揚聲器孔隙band loud -speaker 薄帶揚聲器;翻譯;薄帶揚聲器英語piezoelectric loud -speaker 壓電式揚聲器magnetic loud -speaker 簧舌式揚聲器electrostaboutic loud -speaker 靜電揚聲器 返回 loud speaker