air pollution causes and effects
Identifies Causes And Effects 判断因果关系 Air Pollution Causes and Effects 空气污染的形成和影响 Causes and Effects on Inflation 通涨的成本与影响 ..
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The utility model causes air fed into a room to achieve the effects of neatness and freshness, thereby efficiently reducing the air pollution and the damage to a human body.
本实用新型使送入房间的空 气达到洁净、清新的效果，从而有效减少空气污染及对人体危害。
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