加气 加氣

    jiāqì

    1. Verbto aerate; to ventilate

    这个水处理系统需要加气来增加水中的氧气含量。Zhège shuǐ chǔlǐ xìtǒng xūyào jiāqì lái zēngjiā shuǐ zhōng de yǎngqì hánliàng.This water treatment system needs aeration to increase the oxygen content in the water.