| |||
| ligne bifilaire | |||
| ligne à double voie | |||
| |||
| étoile double spectroscopique à deux spectres (spectroscopic) | |||
|
double line : 20 phrases in 9 subjects |
| Construction | 1 |
| Electronics | 4 |
| Finances | 1 |
| Handball | 1 |
| Life sciences | 3 |
| Natural resourses and wildlife conservation | 1 |
| Power lines | 1 |
| Radiation | 2 |
| Transport | 6 |