| |||
| 电火花源 | |||
| 电火花震源 | |||
| 火花源 | |||
|
spark source : 41 phrases in 10 subjects |
| Aviation | 1 |
| Chemistry | 10 |
| Earth sciences | 8 |
| Ecology | 1 |
| Electronics | 4 |
| Geology | 2 |
| Materials science | 1 |
| Metallurgy | 3 |
| Space | 1 |
| Technology | 10 |
| |||
| 电火花源 | |||
| 电火花震源 | |||
| 火花源 | |||
|
spark source : 41 phrases in 10 subjects |
| Aviation | 1 |
| Chemistry | 10 |
| Earth sciences | 8 |
| Ecology | 1 |
| Electronics | 4 |
| Geology | 2 |
| Materials science | 1 |
| Metallurgy | 3 |
| Space | 1 |
| Technology | 10 |