feed-back
| circuit
| feed-back | |
| med. | retroação |
| circuit | |
| econ. stat. el. | circuito |
| el. | terno |
| IT | circuito de telecomunicação |
| |||
| retroação | |||
|
feed-back : 6 phrases in 4 subjects |
| Communications | 2 |
| Information technology | 1 |
| Medical | 2 |
| Nuclear and fusion power | 1 |