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吸入大量离子化的空气,对疾病有重要的预防和治疗作用,然而多数空调机却把空气的自然离子化作用降低了5％。我们研究了负离子对纺织工人血压和呼吸频率的影
Inhalation of large amounts of ionized air has an important preventive and curative effect on the disease, whereas most air conditioners reduce the air’s natural ionization by 5%. We studied the effect of negative ions on the blood pressure and respiratory rate of textile workers