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ecusthyx

铜虫 (初入文坛)

[交流] 【求助】膨胀仪为何会出现负膨胀? 已有1人参与

无论做什么材料的样品,在开始几十度的时候都会出现一段负膨胀,可有达人知道这是什么原因?

另外,我做两个高分子的样品,一模一样的东西,一个是正常膨胀曲线,另一个却全程都是负膨胀,会是什么情况?
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junqiuzhu

金虫 (正式写手)

如果我没猜错的化: 应该是你们的仪器在低膨胀时不够精确,所以刚加温是数据不准确
我猜的哟!
2楼2010-05-25 12:53:21
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