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| liquefaction of air | |||
| air liquefaction | |||
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空气液化 : 14 phrases in 8 subjects |
| Aviation | 1 |
| Electronics | 1 |
| Explosives and Explosive Ordnance Disposal | 2 |
| General | 1 |
| Metallurgy | 1 |
| Oil / petroleum | 1 |
| Space | 3 |
| Technology | 4 |
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