【电学】电信技术

该系统利用省中心和各地市的呼叫中心，来实现省电信局数据网关与省中心数据网关、省中心数据网关与各地市数据网关之间的数据通信。

super-telephone telegraphy【通信】

direct-current telegraphy

dot-and-dash code telegraphy reception

order, fire or police TELEGRAPHY

acoustical telegraphy【通信】;audio frequency telegraph【通信】;

speed conversion dc telegraphy (direct-current telegraphy)

direct-current telegraphy, compensating variations

earth telegraphy