| |||
| 光学系 (kōgakukei) | |||
|
Optical System : 7 phrases in 5 subjects |
| General | 1 |
| Physics | 3 |
| Radio | 1 |
| Thermal Energy | 1 |
| Video recording | 1 |
| |||
| 光学系 (kōgakukei) | |||
|
Optical System : 7 phrases in 5 subjects |
| General | 1 |
| Physics | 3 |
| Radio | 1 |
| Thermal Energy | 1 |
| Video recording | 1 |