 |
| fracture plane: 30 phrases in 12 subjects |
| Automobiles | 1 |
| Electrical engineering | 1 |
| Geology | 3 |
| Ice formation | 1 |
| Makarov | 4 |
| Materials science | 2 |
| Metallurgy | 2 |
| Natural resourses and wildlife conservation | 3 |
| Oilfields | 2 |
| Physics | 2 |
| Strength of materials | 2 |
| Technology | 7 |