| |||
| passive solar system; passive system | |||
| passive system (system where an object is detected by virtue of its own radiation) | |||
| passive system (Zielverfolgung) | |||
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passives : 8 phrases in 7 subjects |
| Economics | 1 |
| Electronics | 1 |
| Finances | 2 |
| Microsoft | 1 |
| Research and development | 1 |
| Robotics | 1 |
| Technology | 1 |