 |
| |||
| 光線群 (こうせんぐん) | |||
| |||
| 光束 (kōsoku) | |||
|
luminous flux : 1 phrase in 1 subject |
| Physics | 1 |
The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Add | The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Report an error
| Get short URL | Language Selection Tips