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| Subject | English | Arabic |
| telegr. | half duplex | بسيط |
| comp., MS | half-duplex | أحادي الاتجاه (Two-way electronic communication that takes place in only one direction at a time) |
| telecom. | half-duplex | بسيط؛ نِصْف مزدوج |
| telegr. | half-duplex apparatus | معدة نصف مزدوجة |