| |||
| ringfoermig; torusfoermig; toroidal | |||
| Ringkern; Toroid | |||
|
toroidal : 35 phrases in 9 subjects |
| Antennas and waveguides | 3 |
| Earth sciences | 5 |
| Electronics | 11 |
| Mechanic engineering | 7 |
| Natural sciences | 2 |
| Nuclear and fusion power | 3 |
| Physical sciences | 2 |
| Transport | 1 |
| Work flow | 1 |