unit-area acoustical ohm【声】
声频电报
acoustical telegraphy【通信】;audio frequency telegraph【通信】;
暂无补充释义。
相关词条
acoustic mine【军】;acoustical mine【军】;sound mine【军】
electrostatic acoustical instrum-ent
acoustical
optical and acoustical
acoustical
contour-measuring appliance, acoustical
acoustic logging instrument【油气】;acoustical log tool【油气】;