| filter | |
| chem. | filtrar |
| el. | filtros; filtro de frequência |
| environ. | filtros |
| fin. scient. | instrumento de alisamento |
| math. | filtro |
| tech. el. | filtro de ondas |
| filters | |
| gen. | filtros; filtros para a fotografia |
|
polyphase : 50 phrases in 7 subjects |
| Electric motors | 1 |
| Electric traction | 1 |
| Electricity generation | 1 |
| Electronics | 43 |
| General | 1 |
| Information technology | 1 |
| Mechanic engineering | 2 |