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为了摸清我县电镀行业铬危害情况,我们于1990年和1991年分别对15家镀铬工厂进行了调查。(1)车间空气中铬浓度测定结果:1990年为0～0.4100mg/
In order to find out the chrome hazard in the electroplating industry in our county, we surveyed 15 chrome-plating factories in 1990 and 1991 respectively. (1) Determination of chromium concentration in the air workshop: 0 ~ 0.4100mg /