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frequency standard
of reference
| frequency standard | |
| el. | campione di frequenza; standard di frequenza |
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| campione di frequenza; standard di frequenza | |||
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frequency standard of reference : 30 phrases in 5 subjects |
| Communications | 4 |
| Electronics | 6 |
| Information technology | 2 |
| Radio | 2 |
| Technology | 16 |
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