ncef
导读：ncef读音音标英[n\\\'sef]美[n\\\'sef]
基本意思释义abbr.national calling and emergency frequency 国家呼叫和应急频率
基本意思释义abbr.national calling and emergency frequency 国家呼叫和应急频率
ncef读音音标
英[n\\\'sef]
美[n\\\'sef]
基本意思释义
abbr.national calling and emergency frequency 国家呼叫和应急频率
