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| boîtier de commutation | |||
| boîtier d'écoute | |||
| commutateur m | |||
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| dispositif de commutation | |||
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switching unit : 34 phrases in 11 subjects |
| Automated equipment | 3 |
| Aviation | 1 |
| Communications | 6 |
| Computers | 1 |
| Earth sciences | 1 |
| Electronics | 5 |
| General | 2 |
| Information technology | 9 |
| Mechanic engineering | 2 |
| Telecommunications | 3 |
| Transport | 1 |