双音多频序列的英文

• dtmf

• 双音多频:    dual-tone multifrequency
• 序列:    order; alignment; array; suc ...
• （双音多频）音调:    dtmf
• 双音多频:    dtmf double tone multi frequency; dtmf double tone multi-frequency; dtmf dual tone multifrequency; dtmf dual tone multiple frequency; dual tone multi frequency，dtmf; dual tone multi-frequency dtmf; dual-tone multifrequency
• 双音多频制:    dual-tone multifrequency system (dtmf)