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| high density material | |||
| high-weight material | |||
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高密度材料 : 10 phrases in 7 subjects |
| Ceramics | 1 |
| Drilling | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Metallurgy | 3 |
| Plastic surgery | 1 |
| Space | 2 |
| Technology | 1 |
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