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
用法例句
According to the queuing theory,the derived mathematical expectation of Tint,is related to four factors: session ratio,session duration,the speed of mobile node and the layer of MAP.