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particulate filters : 40 phrases in 19 subjects |
| Air conditioners | 3 |
| Automobiles | 2 |
| Biotechnology | 2 |
| Caspian | 1 |
| Construction | 1 |
| Ecology | 2 |
| Energy industry | 5 |
| General | 3 |
| Karachaganak | 1 |
| Makarov | 3 |
| Material safety data sheet | 1 |
| Military | 1 |
| Nuclear and fusion power | 1 |
| Nuclear physics | 6 |
| Occupational health & safety | 1 |
| Pharmacology | 1 |
| Pharmacy and pharmacology | 1 |
| Sakhalin | 2 |
| Technology | 3 |