 |
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| direct current signaling; direct current signalling; DC signaling; DC signalling | |||
| open-circuit signaling; open-circuit signalling | |||
|
likstromssignalering : 2 do fraz, 1 tematyki |
| Komunikacja | 2 |
|
| |||
| direct current signaling; direct current signalling; DC signaling; DC signalling | |||
| open-circuit signaling; open-circuit signalling | |||
|
likstromssignalering : 2 do fraz, 1 tematyki |
| Komunikacja | 2 |