室内空气污染物来源广泛、种类繁多，各种污染物对人体的危害程度不同，并且在现代的建筑设计中越来越考虑能源的有效利用，使室内与外界的通风换气非常少，在这种情况下室内和室外就变成两个相对不同的环境，因此室内空气污染有其自身的特点，主要表现在以下几个方面：
Because indoor air pollutants come from a wide range of sources and types, and the harmfulness of various pollutants to human body is different, and more and more effective use of energy is considered in modern architectural design, so that ventilation and ventilation between indoor and external are very few. In this case, indoor and outdoor air pollution will become two relatively different environments. Therefore, indoor air pollution has its own characteristics. It is shown in the following aspects:
（1）长期性
(1) Long-term
很多室内空气污染物在短期内就可对人体产生极大的危害，而有的则潜伏期很长。比如放射性污染，潜伏期达几十年之久。
Many indoor air pollutants can cause great harm to human body in a short time, while others have a long latency period. Radioactive contamination, for example, has a latency of several
（2）累积性
(2) Accumulation
室内环境是人们生活、工作的主要橡胶托辊 槽型托辊 皮带托辊 平行托辊 保定搬家 保定搬家电话 保定搬家公司 保定搬家 铜鼎 铜狮子 场所。人的一生中至少有一半的时间在室内度过，这样长时间暴露在有污染的室内空气环境中，污染物对人体的累积危害就更为严重。
Indoor environment is the main place where people live and work. People spend at least half of their life indoors, so long exposure to polluted indoor air environment, the cumulative harm of pollutants to the human body is more serious.
（3）多样性
(3) Diversity
室内空气污染物种类繁多，有物理污染、化学污染、生物污染、放射性污染等
There are many kinds of indoor air pollutants, such as physical pollution, chemical pollution, biological pollution, radioactive pollution and so on.