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| защитное вещество | |||
| protection material: 31 phrases in 12 subjects |
| Astronautics | 7 |
| Aviation | 2 |
| Construction | 1 |
| Ecology | 1 |
| Energy industry | 3 |
| Mathematics | 1 |
| Medical | 2 |
| Medical appliances | 2 |
| Nanotechnology | 5 |
| Nuclear and fusion power | 3 |
| Technology | 3 |
| Weapons of mass destruction | 1 |