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| 臭氧化 (ozonisatio) | |||
| 臭氧化 | |||
| 用臭氧处理 | |||
| 臭氧化作用; 臭氧处理 | |||
| 臭氧化作用 | |||
| 臭氧化 (作用) | |||
| 臭氧消毒; 臭氧氧化法; 臭氧消毒法 | |||
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| 修补臭氧 (修补臭氧层。) | |||
| ozonization: 11 phrases in 4 subjects |
| Ecology | 1 |
| Oil / petroleum | 1 |
| Technology | 7 |
| Water resources | 2 |
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