loudhailer

音標發(fā)音

Guangzhou Chuanteng Electronic Technology Co. , Ltd is a new enterprise specialized in designing, researching, producing, and selling high-quality vibration loudhailer.
廣州市川騰電子科技有限公司是一家致力于設計、研發(fā)、生產、銷售高品質振動揚聲器的新型企業(yè)。
It is like an advanced form of loudhailer which specifically directs the sound rather than bathing everyone "says neil davison of the non-lethal weapons project at the university of bradford."
「這就像進化的揚聲器，揚聲器引導聲音的方向而非泛傳給所有對象?！?萊佛德非致命武器計劃的尼爾大衛(wèi)森說。