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一、空气污染:有些舞厅因简就陋,通风换气设施■条件较差。尤其是跳舞时门窗紧闭,致使舞厅内空气十分污浊。据检测,一些通讯性能较差、人员密度过大的舞厅,室内空气中二氧化碳浓度高达20毫克/立方米;细菌总数达近万个/立方米。常常是流感、肺结核等呼吸道传染病的传播场所。另外,有些青年不顾道德规范的约束,随意在舞厅内吸烟,更是给室内带来极大的污染危害。二、激光污染:现代舞厅大都采用激光配色照
First, the air pollution: some ballroom due to Jane simple, ventilation facilities ■ poor conditions. Especially when the windows and doors closed dancing, resulting in the ballroom air is very dirty. According to testing, some communication performance is poor, the ballroom is too large, the concentration of carbon dioxide in indoor air as high as 20 mg / cubic meter; the total number of bacteria reached nearly 10,000 / cubic meter. It is often the site of transmission of respiratory infections such as flu and tuberculosis. In addition, some young people, regardless of moral norms and restrictions, feel free to smoke in the ballroom, but also bring great indoor pollution hazards. Second, laser pollution: most of the modern ballroom laser color matching photos