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不 燃性 : 54 phrases in 15 subjects |
| Architecture | 1 |
| Automobiles | 1 |
| Aviation | 4 |
| Chemistry | 1 |
| Explosives and Explosive Ordnance Disposal | 2 |
| General | 1 |
| Metallurgy | 4 |
| Oil / petroleum | 2 |
| Plastics | 4 |
| Polymers | 3 |
| Refrigeration | 1 |
| Space | 5 |
| Technology | 20 |
| Textile industry | 4 |
| Wood processing | 1 |
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