 |
| ventilação: 103 phrases in 18 subjects |
| Agriculture | 9 |
| Brazil | 1 |
| Chemistry | 1 |
| Coal | 1 |
| Construction | 2 |
| Earth sciences | 6 |
| Electric motors | 4 |
| Electronics | 9 |
| Environment | 3 |
| Industry | 7 |
| Labor law | 1 |
| Materials science | 2 |
| Mechanic engineering | 17 |
| Municipal planning | 7 |
| Natural sciences | 2 |
| Patents | 3 |
| Technology | 1 |
| Transport | 27 |