solfläckscykel | |
nat.sc. | ciclo de actividad solar; ciclo de manchas solares; ciclo solar |
11: 21 phrases in 11 subjects |
Chemistry | 6 |
Communications | 2 |
Electronics | 2 |
General | 2 |
Human rights activism | 1 |
Immigration and citizenship | 2 |
Information technology | 1 |
Law | 1 |
Microsoft | 1 |
Natural sciences | 2 |
Technology | 1 |