Zhen Yu company is committed in the design , derelopment production and distributing of warning lightings, siren and loudhailer.振宇公司是专业从事警示灯 、 警报器扬声器的设计、开发、生产及销售的企业....

loudhailer的复数形式为：loudhailers...

loudhailer的音标：loudhailer的英式发音音标为：[ˌlaʊd'heɪlə(r)]loudhailer的美式发音音标为：[ˌlaʊd'heɪlər]...

n.喇叭筒，扬声器...