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| cyclic stress: 9 phrases in 9 subjects |
| Astronautics | 1 |
| Automobiles | 1 |
| Aviation | 1 |
| Electronics | 1 |
| Materials science | 1 |
| Metallurgy | 1 |
| Nanotechnology | 1 |
| Physics | 1 |
| Seismology | 1 |
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