pushbutton
| interlocking machine
| pushbutton | |
| commun. IT | trykknap |
| interlocking machine | |
| IT transp. | signalpost |
| |||
| trykknap | |||
|
pushbutton : 11 phrases in 4 subjects |
| Communications | 8 |
| Electronics | 1 |
| Information technology | 1 |
| Transport | 1 |