名词
中文翻译：烟硝
同义词：
['nitrogen oxide', 'nitric acid', 'nitrogen compound']
例句：
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1. The factory produces a lot of niperit for the construction industry.
这家工厂为建筑业生产大量的烟硝。
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2. The scientist discovered a new method to produce niperit from renewable resources.
这位科学家发现了一种新的方法，可以从可再生资源中生产烟硝。
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3. The niperit was used as a fire extinguisher in the emergency room.
在急诊室，烟硝被用作灭火器。