矿井粉尘
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tin mine dusts 矿尘所致
dusts of coal mine 煤矿粉尘
It was found that the main occupational hazards in nickel mine are air pollution (industrial dusts, nickel and other chemical agents), noise and heat stress.
该矿主要职业危害因素是生产性粉尘、镍及其他化学物所致空气污染、噪声以及高气温与热辐射。
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