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| nitrous: 59 phrases in 19 subjects |
| Automobiles | 4 |
| Chemistry | 15 |
| Ecology | 1 |
| Food industry | 1 |
| General | 2 |
| Genetics | 1 |
| GOST | 1 |
| Inorganic chemistry | 2 |
| Lasers | 1 |
| Makarov | 3 |
| Medical | 4 |
| Medical appliances | 5 |
| Meteorology | 1 |
| Mining | 1 |
| Oil / petroleum | 4 |
| Oil and gas | 1 |
| Oil processing plants | 8 |
| Sakhalin | 1 |
| Technology | 3 |