The absorption device of neutralization tail gas is improved by phosphoric acid absorbing gasammonia in neutralization tail gas and circulation absorption fluid returning to acid mixing unit.
对传统中和尾气吸收装置进行改造，利用磷酸吸收中和尾气中的气氨，循环吸收液重新返回混酸系统使用。
2
Then some astronomers came up with the idea that atmospheric ammonia might have acted as a greenhouse gas.
后来一些天文学家提出，大气中的氨可能起到温室气体的作用。
3
The insects also produce 300 times less nitrous oxide, also a warming gas, and much less ammonia, a pollutant produced by pig and poultry farming.