| |||
| rayons lumineux | |||
| |||
| rayon optique | |||
| rayon lumineux | |||
|
light rays : 6 phrases in 6 subjects |
| Agriculture | 1 |
| Astronomy | 1 |
| General | 1 |
| Medical | 1 |
| Metallurgy | 1 |
| Textile industry | 1 |
| |||
| rayons lumineux | |||
| |||
| rayon optique | |||
| rayon lumineux | |||
|
light rays : 6 phrases in 6 subjects |
| Agriculture | 1 |
| Astronomy | 1 |
| General | 1 |
| Medical | 1 |
| Metallurgy | 1 |
| Textile industry | 1 |