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来自维基百科，自由的百科全书
杜瓦罐（cryogenic storage dewar），也称真空罐、低温储罐，是工业界用于储存液氮、液氦等低温液态气体的真空绝热容器，由苏格兰物理学家兼化学家詹姆斯·杜瓦（James Dewar）发明，有很好的绝热保温效果。
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