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down time : 39 phrases in 16 subjects |
| Astronomy | 1 |
| Automated equipment | 1 |
| Coal | 1 |
| Communications | 7 |
| Computers | 2 |
| Economics | 5 |
| Electronics | 1 |
| General | 4 |
| Law | 1 |
| Materials science | 1 |
| Mechanic engineering | 2 |
| Metallurgy | 3 |
| Reliability | 2 |
| Technology | 3 |
| Transport | 4 |
| United Nations | 1 |