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刚买的制氧机2分钟内氧浓度可以快速上升，为什么现在要久点？
新机2-3分钟内氧浓度可达到95%，配件衰减和受潮后，氧浓度上升时间会增加。 更多制氧机知识，可全网搜索，夜猫制氧机
制氧机的故事121/167
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