修复投入使用，氧气纯度达99.5%以上。

After the repair, oxygen purity reaches over 99.5%.

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改变电化学制氧机隔膜，分别测得不同隔膜下氧气纯度。

By changing the membrane of the machine, the purity of oxygen under the different membrane is measured.

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氧气从原来旁边进入压缩机，改为顶部进入无水压缩机，使氧气纯度减少污染。

Oxygen from original into compressor, next to the top to without water, make oxygen compressor purity to reduce pollution.

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