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| cleaning gas | |||
| purgative gas | |||
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清 洗 气 : 45 phrases in 13 subjects |
| Architecture | 1 |
| Automobiles | 4 |
| Compressors | 1 |
| Drilling | 1 |
| Ecology | 1 |
| Electronics | 1 |
| General | 1 |
| Household appliances | 1 |
| Metallurgy | 12 |
| Refrigeration | 2 |
| Steel production | 1 |
| Technology | 18 |
| Water supply | 1 |
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