短语词组短语loud -speaker or speaker 扬声器band loud -speaker 薄带扬声器;薄带扬声器英语;翻译piezoelectric loud -speaker 压电式扬声器magnetic loud -speaker 簧舌式扬声器electrostaboutic loud -speaker 静电扬声器hot wire loud -speaker 热线式扬声器 返回 loud-speaker