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| Chinese | English |
| 水充气 | water aeration Addition of air to sewage or water so as to raise its dissolved oxygen level (通过在污水或水中增加空气含量，提高溶氧水平。) |
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| Chinese | English |
| 水充气 | water aeration Addition of air to sewage or water so as to raise its dissolved oxygen level (通过在污水或水中增加空气含量，提高溶氧水平。) |