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新型开口锌凝固点复现装置 被引量:2

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摘要 介绍了中国计量科学研究院研制的新型开口锌凝固点复现装置,该装置采用99.99999%的高纯锌金属固定点灌注技术,固定点炉采用三段控温的方式,依靠精确控温及合理的结构设计获得优良的垂直温场。通过准确测量容器的内部气压,可以优化我国国家基准中气压修正的不确定度分量。实验结果显示:该装置复现的温坪时间大于30小时,复现的扩展不确定度为0.6mK(k=2)。
出处 《计量技术》 2012年第9期3-6,共4页 Measurement Technique
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参考文献18

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