tiempo de funcionamiento : 27 phrases in 12 subjects |
Chemistry | 1 |
Communications | 6 |
Electronics | 2 |
Information technology | 1 |
Medical | 1 |
Metallurgy | 1 |
Power system protection | 4 |
Reliability | 1 |
Statistics | 4 |
Technology | 4 |
Transport | 1 |
Vacuum tubes | 1 |