 |
| |||
| low-combustible (Alexander Demidov) | |||
| not easily combustible (linkin64); combustible with difficulty (yevsey) | |||
| hardly combustible (Bauirjan) | |||
| трудногорючий: 8 phrases in 6 subjects |
| Chemistry | 1 |
| Construction | 1 |
| Firefighting and fire-control systems | 2 |
| Forest chemistry | 1 |
| General | 2 |
| Occupational health & safety | 1 |