短語詞組短語search and rescue beacon equipment 搜尋和救助信標(biāo)設(shè)備;搜索營救電子設(shè)備;搜索和營救信標(biāo)設(shè)備search and rescue beacon frequency 搜救信標(biāo)頻率search -and-rescue beacon 搜索救援信號(hào) 返回 search and rescue beacon