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| 氧化试验 | |||
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oxidation test : 22 phrases in 8 subjects |
| Aviation | 1 |
| Chemistry | 2 |
| Earth sciences | 1 |
| Mechanics | 1 |
| Metallurgy | 1 |
| Oil / petroleum | 4 |
| Oil processing plants | 7 |
| Technology | 5 |
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