Kennwert: 17 phrases in 12 subjects |
Chemistry | 1 |
Coal | 3 |
Communications | 1 |
Computers | 1 |
Construction | 1 |
Economy | 2 |
Electronics | 1 |
Information technology | 1 |
Microelectronics | 1 |
Natural resourses and wildlife conservation | 1 |
Technology | 3 |
Thermal Energy | 1 |