Toroid
| Reflektor
| Toroid | |
| el. | ringkärna |
| Reflektor | |
| comp., MS | reflektor |
| life.sc. | reflektorkikare |
| therm.energ. | mikrovågsreflektor |
| |||
| ringkärna | |||
|
Toroid : 2 phrases in 1 subject |
| Antennas and waveguides | 2 |