| |||
| toroidal coil; toroid | |||
| torus; toroidal core; ring core (e.g. of a coil); annular core (e.g. of a coil) | |||
| annulus | |||
| toroid (tube) | |||
|
Toroid : 2 phrases in 1 subject |
| Antennas and waveguides | 2 |
| |||
| toroidal coil; toroid | |||
| torus; toroidal core; ring core (e.g. of a coil); annular core (e.g. of a coil) | |||
| annulus | |||
| toroid (tube) | |||
|
Toroid : 2 phrases in 1 subject |
| Antennas and waveguides | 2 |