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| 氧气分析计 | |||
| 氧量计; 氧气分析器 | |||
| 氧分析器 | |||
| ★ 氧分析仪 | |||
| 氧气分析仪; 氧气浓度分析器; 含氧量分析仪 | |||
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| 氧分析器 | |||
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oxygen analyzer : 28 phrases in 10 subjects |
| Aviation | 1 |
| Chemistry | 2 |
| Earth sciences | 1 |
| Electronics | 4 |
| Mechanic engineering | 1 |
| Metallurgy | 3 |
| Nautical | 1 |
| Oil / petroleum | 4 |
| Technology | 10 |
| Water resources | 1 |