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| zakładka w Internecie; znacznik w Internecie | |||
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المرجعية : 20 phrases in 8 subjects |
| Electrical engineering | 1 |
| Electronics | 6 |
| Environment | 3 |
| Mathematics | 1 |
| Microsoft | 2 |
| Piezoelectric crystals | 3 |
| Telephony | 3 |
| Wind Energy | 1 |
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