Units: megahertz (MHz) AM (amplitude modulation) , 200 and up are for military use, but are staffed by the same civil controllers.是什么意思_Units: megahertz (MHz) AM (amplitude modulation) , 200 and up are for military use, but are staffed by the same civil controllers.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句