尽管主要作为气体使用，氧经常是液态储存的。
Oxygen is often stored as a liquid, although it is used primarily as a gas.
液态储存比相同容量的高压气体储存的体积更小，费用更低。
Liquid storage is less bulky and less costly than the equivalent capacity of high-pressure gaseous storage.
常规液态储存方式采用间歇供热，该方式能量消耗巨大，还会产生一些安全问题。
The liquid phase storage is usually adopted with the intermittent heating. This storage method has a disadvantage of high energy consumption and safety problems.
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