例句 /

This paper stated the reason and harm of producing waste gas, the way of dealing with and effects in small nitrogenous fertilizer factory.

This paper stated the reason and harm of producing waste gas, the way of dealing with and effects in small nitrogenous fertilizer factory.

摘要阐述了小氮肥厂废气产生的原因与危害及其处理的方法与效果。