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供氧装置在密闭的地下坑道或地下避难硐室里,为延长隔绝防护时间,保证较长时间安全居留,必须使用氧气发生装置。常用的供氧装置如下:
Oxygen supply device in a confined underground tunnel or underground refuge chamber, in order to extend the isolation protection time, to ensure a long time safe residence, you must use oxygen generator. Commonly used oxygen device is as follows: