chemical irritant

1. Chemical irritants such as ammonia, acid, and sulfur dioxide are soon absorbed by the lung lining; their irritant effect can cause pulmonary edema, and they can lead to chronic bronchitis.
   氨、酸类和二氧化硫等有刺激性的化学物质，均能经肺的内壁迅速吸收而造成肺水肿，并可导致慢性支气管炎。
2. Applying a chemical irritant ( ether extract of capsicum) to the sciatic nerve topically;
   化学物质（辣椒的乙醚提取物）刺激坐骨神经；
3. In our researches, on the basis of chemical and pharmacological studies, processing principle of the rhizome of Cibotium barometz was discussed. After it was processed, the content of effective constituents increased and the irritant constituents decreased.
   本实验通过化学研究和药理学研究，探讨了狗脊炮制的原理，狗脊炮制后有效成分含量增加，刺激性成分含量降低，故狗脊炮制可起到减毒增效的双重作用。

noun

1. a substance producing irritation