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| 氧调节; 氧控制 | |||
| 氧气设备操纵机构 | |||
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oxygen control : 16 phrases in 7 subjects |
| Automobiles | 1 |
| Aviation | 3 |
| Chemistry | 1 |
| Electronics | 2 |
| Metallurgy | 4 |
| Space | 4 |
| Technology | 1 |
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