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报道:CO_2气体保护焊作业工人的健康调查.结果表明:CO_2 保护焊作业环境中CO、MnO_2及粉尘浓度较高,均
Reported that: CO_2 gas shielded welding workers health survey results show that: CO_2 shielded welding environment CO, MnO_2 and dust concentrations are higher, both