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| فتْح | |||
| فتح | |||
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| فصل | |||
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| فتحة لهوائى | |||
| apertura: 55 phrases in 22 subjects |
| Accumulators | 1 |
| Antennas and waveguides | 9 |
| Economy | 1 |
| Electric machinery | 1 |
| Electrical engineering | 2 |
| Electricity generation | 2 |
| Electronics | 5 |
| Fishery fishing industry | 1 |
| Isolation | 1 |
| Lighting other than cinema | 4 |
| Microsoft | 3 |
| Power electronics | 1 |
| Power system protection | 9 |
| Radio | 2 |
| Rail transport | 2 |
| Sound recording | 2 |
| Telecommunications | 1 |
| Telegraphy | 1 |
| Thermal Energy | 2 |
| Vacuum tubes | 1 |
| Video recording | 1 |
| Wood processing | 3 |