第四级：后置活性炭滤芯(Post carbon filter)
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后置精密活性炭滤芯 (Post carbon filter)
Post-carbon filter 后置活性炭滤芯
Post In-line Active Carbon Filter 后置纯水精制滤芯
post carbon filter
后置碳过滤器
以上为机器翻译结果，长、整句建议使用 人工翻译 。
It is also indicated that the pre-ozonation can improve the removal efficiency of TOC and algae by aeration, and that the post-ozonation accelerates TOC removal by activated carbon filter.
同时臭氧预氧化可提高气浮对藻类和TOC的去除效率，臭氧中间氧化也有利于提高活性炭对TOC的去除。
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