| filter | |
| commun. el. | weighting network |
| construct. | well screen |
| el. | frequency filter; a.c.filter |
| environ. | dust arrester; dust filter; screen; strainer |
| fin. scient. | smoothing device |
| math. | filter |
|
RC : 26 phrases in 5 subjects |
| Communications | 2 |
| Earth sciences | 3 |
| Electronics | 7 |
| General | 8 |
| Information technology | 6 |