 |
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| iron oxide; iron protoxide | |||
| ferric oxide | |||
| ferrous oxide; ferrous iron; iron monoxide; lower iron; lower ferrous oxide; lower iron oxide | |||
| закись железа: 25 phrases in 9 subjects |
| Agrochemistry | 3 |
| Chemistry | 5 |
| Electronics | 3 |
| Geology | 5 |
| Metallurgy | 3 |
| Mining | 1 |
| Road works | 1 |
| Technology | 1 |
| Thermal engineering | 3 |