 |
| ventilation: 265 phrases in 38 subjects |
| Agriculture | 31 |
| Aviation | 2 |
| Canada | 1 |
| Chemistry | 10 |
| Coal | 1 |
| Communications | 1 |
| Construction | 6 |
| Earth sciences | 7 |
| Economy | 8 |
| Electric motors | 3 |
| Electric traction | 3 |
| Electronics | 8 |
| Energy industry | 4 |
| Environment | 1 |
| Finances | 10 |
| Food industry | 5 |
| General | 11 |
| Health care | 3 |
| Industry | 12 |
| International Monetary Fund | 8 |
| Labor law | 2 |
| Law | 1 |
| Life sciences | 1 |
| Marketing | 1 |
| Materials science | 1 |
| Mechanic engineering | 31 |
| Medical | 12 |
| Microsoft | 4 |
| Municipal planning | 22 |
| Natural sciences | 4 |
| Packaging | 2 |
| Patents | 3 |
| Social science | 1 |
| Statistics | 4 |
| Technology | 3 |
| Transport | 36 |
| United Nations | 1 |
| Wood processing | 1 |