How does the filter remove poisonous chemicals and deadly bacteria from the air?
过滤器是如何除去空气中的有毒化学品或致命细菌呢？
2
Dr Cui's filter, though, does not screen the bacteria out. It kills them.
而崔博士的新型净水器，不是把细菌过滤掉，而是把它们统统杀死。
3
As they report in the latest edition of Nano Letters, Dr Cui and his team found that when the filter was operated at -20 volts it killed 89% of the bacteria and that at + 20 volts it killed 77%.