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| repeater unit | |||
| repeater; telephone amplifier; telephone repeater | |||
| ticking; overcoatings | |||
| coverall | |||
| coating | |||
|
overdrag : 15 phrases in 10 subjects |
| Communications | 2 |
| Electronics | 1 |
| European Union | 1 |
| General | 2 |
| Information technology | 3 |
| Materials science | 2 |
| Metallurgy | 1 |
| Patents | 1 |
| Power lines | 1 |
| Telegraphy | 1 |