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忙碌在城市中的人们为了事业而奔波,但随着环境污染和室内的长期通气性不佳却忽视了呼吸健康。空气是多种气体的混合物,其中主要成分是氮、氧、二氧化碳和水蒸气。通常,空气中的各种气体分子都很稳定,呈中性,即不带电。然而,由于自然界的宇宙射线、紫外线以及雷电、风浪、植物等的作用,会导致周围空气电离,产生负离子,也叫空气负离子。雨后空气的清新便是如此的道理。
Busy people in cities rush for business, but ignore respiratory health as environmental pollution and long-term indoor ventilation are poor. Air is a mixture of gases, the main components of which are nitrogen, oxygen, carbon dioxide and water vapor. In general, the various gas molecules in the air are stable, neutral, ie uncharged. However, due to nature’s cosmic rays, ultraviolet rays, thunder and lightning, storm waves, plants and the like, the ambient air is ionized and negative ions are generated, also called air negative ions. The fresh air after the rain is such a reason.