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متكرر |
wielokrotny : 25 phrases in 10 subjects |
Electrical engineering | 5 |
Electronics | 1 |
Environment | 1 |
Lighting other than cinema | 1 |
Mathematics | 6 |
Microsoft | 6 |
Power electronics | 1 |
Sound recording | 2 |
Telecommunications | 1 |
Telegraphy | 1 |