Random digit dialing

Random digit dialing (RDD) is a method for selecting people for involvement in telephone statistical surveys by generating telephone numbers at random. Random digit dialing has the advantage that it includes unlisted numbers that would be missed if the numbers were selected from a phone book. In populations where there is a high telephone-ownership rate, it can be a cost efficient way to get complete coverage of a geographic area.

单词	Random digit dialing
释义	Random digit dialing 英语百科 Random digit dialing Random digit dialing (RDD) is a method for selecting people for involvement in telephone statistical surveys by generating telephone numbers at random. Random digit dialing has the advantage that it includes unlisted numbers that would be missed if the numbers were selected from a phone book. In populations where there is a high telephone-ownership rate, it can be a cost efficient way to get complete coverage of a geographic area.
随便看	Whitinsville的意思 whitish的意思 whitish and hard fur的意思 whitish and turbid urine的意思 whitish aphthae的意思 whitish aphthosis的意思 whitish boil的意思 whitish complexion的意思 whitish dysentery的意思 whitish gingival blisters的意思 whitish greasy fur的意思 whitish largngeal tumefaction的意思 whitish laryngalgia的意思 whitish laryngitis的意思 whitish lingual swelling的意思 whitish lips的意思 whitish locus的意思 Whitishly的意思 whitish menorhea的意思 whitish menorrhea的意思 whitish metrorrhagia的意思 whitish的意思 whitish的意思 whitish or brownish bloom的意思 whitish otorrhea的意思