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为了了解长期从事噪声作业的工人,在其上下班前后的心血管变化,特选择接触噪声强度与接触时间都比较稳定的某棉纺织厂细纱及织布车间进行了调查。测得车间噪声强度为93～100dB(A);其频率分布见图1。受检查人数为男工42人,女工80人;非噪声作业的健康人男102人,女100人,作为对照组。
In order to understand the long-term noise workers in their work before and after the cardiovascular changes, especially the choice of contact noise intensity and contact time are relatively stable, a cotton textile mill yarn and weaving workshop were investigated. Measured workshop noise intensity of 93 ~ 100dB (A); its frequency distribution shown in Figure 1. The inspection population was 42 male workers and 80 female workers, and 102 healthy and non-noise healthy non-noise workers were employed as control group.