telephone frequency

同义词释义

1)telephone frequency,话频2)session ratio,会话频率3)voice frequency,话频<电信>4)voice frequency dialing,话频拨号5)voice-frequency telephony,话频电话6)voice mail,话频邮政7)speed frequency,voice frequency,通话频率8)voice frequency system,话频制9)voice modulation,话频调制10)telephone frequency repeater,话频增音机