现在美国科学家已发明了一种新的方法—“近无氧空气”灭虫法,来消灭仓库害虫。这种方法基于“害虫生存需要氧气”的原理,将几乎不含氧气的空气充满仓室使害虫窒死。科学家通过“点燃”丙炔与自然空气的混合物(1∶10)来产生“近无氧空气”。混合物燃烧后,氧气遭到破坏,由空气中的21％降低到1%。这种燃烧后的混合物(即“近几氧空气”)构成,主要是氮气(N_2)和二氧化碳(CO_2)。“近无氧空气”因不含毒剂,故很安全 Now scientists in the United States have invented a new method - the “nearly anaerobic air” pest control method to eliminate warehouse pests. Based on the principle that “pests need oxygen”, this method suffocates the pests by filling the chamber with almost oxygen-free air. Scientists produce “near-anaerobic air” by “igniting” a mixture of propyne and natural air (1:10). After the mixture burns, oxygen is destroyed, reducing it from 21% in the air to 1%. This combusted mixture, known as “near oxygen”, is mainly nitrogen (N 2) and carbon dioxide (CO 2). “Near-oxygen-free air” is safe because it contains no toxicant