| • द्वैध तार संचार | |
| duplex: दुमंजिला घर | |
| telegraphy: तारसंचार | |
duplex telegraphy meaning in Hindi
duplex telegraphy sentence in Hindi
Examples
- He was president of Franklin Telegraph Co ., from 1869 to 1871, during which time he invented the first practical system of duplex telegraphy which was successfully applied to the English, French and Belgian lines.