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| проницаемость вакуума | |||
| магнитная проницаемость вакуума; магнитная постоянная | |||
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magnetic constant : 7 phrases in 4 subjects |
| Household appliances | 1 |
| Makarov | 4 |
| Metallurgy | 1 |
| Technology | 1 |
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