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data carrier detect
comp., net.	数据载波检测
el.	数据载体探测
IT	数据载波［体］检测
English thesaurus
Data Carrier Detect
abbr.	DCD (EIA RS-232-C; sometimes CD (q.v.))
IT, abbr.	DCD (MODEM, RS-232); DCD (sometimes CD (q.v.), EIA RS-232-C)
telecom., abbr.	DCD