检验了涂层隔绝氧气的能力。

The ability of the coating to isolate oxygen was tested.

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在焊接过程中，加入了隔绝氧气的氮气保护装置，能成功的避免焊接点被氧化。

It adds nitrogen protective device to isolate oxygen to avoid oxidization of welding point.

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为了防止酱油产生强烈的醋味(醋是稀释的乙酸)，必须要使发酵罐隔绝氧气。

To prevent the soy sauce from having a strong vinegar taste (vinegar is dilute acetic acid), oxygen must BE kept, out of the fermentation tank.

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