 |
| |||
| contact sparking | |||
|
искрение контактов : 7 phrases in 4 subjects |
| Automobiles | 2 |
| Mass media | 1 |
| Non-destructive testing | 3 |
| Space | 1 |
|
| |||
| contact sparking | |||
|
искрение контактов : 7 phrases in 4 subjects |
| Automobiles | 2 |
| Mass media | 1 |
| Non-destructive testing | 3 |
| Space | 1 |