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材料科 : 51 phrases in 13 subjects |
| Automobiles | 1 |
| Aviation | 6 |
| Earth sciences | 2 |
| Ecology | 1 |
| Electronics | 5 |
| Environment | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| General | 11 |
| Metallurgy | 7 |
| Polymers | 1 |
| Space | 10 |
| Technology | 3 |
| United States | 2 |
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