| 释义 |
- See also
- References
In telecommunication, a neutral direct-current telegraph system (single-current system, single-current transmission system, single-Morse system) is a telegraph system in which (a) current flows during marking intervals and no current flows during spacing intervals for the transmission of signals over a line, and (b) the direction of current flow is immaterial. See also{{Portal|Electronics|Energy}}{{-}}References{{FS1037C MS188}}{{telecomm-stub}} 1 : Telegraphy |