staircase lighting
| time-delay switch
| staircase lighting | |
| construct. | Treppenhausbeleuchtung |
| time-delay switch | |
| electr.eng. | Verzögerungsschalter |
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| Treppenhausbeleuchtung f | |||
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staircase lighting : 5 phrases in 2 subjects |
| Construction | 3 |
| Technology | 2 |