zhè / tào / shè / bèi / zhǔ / yào / yòng / yú / pái / yān / bù / néng / yòng / lái / chǔ / lǐ / yǒu / dú / qì / tǐ

这套设备主要用于排烟，不能用来处理有毒气体。

This equipment is mainly used to discharge smoke and cannot be used to treat toxic gases.