Occupational health conservationists'main concerns still are chronic or acute poisoning and hearing loss induced by noise.
急慢性职业中毒、噪声性耳聋和尘肺仍是职业卫生工作关注的热点。
Occupational health conservationists'main concerns still are chronic or acute poisoning and hearing loss induced by noise.
急慢性职业中毒、噪声性耳聋和尘肺仍是职业卫生工作关注的热点。
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