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The text has analyzed the mechanism of contraction crack on the surface of ceramic . fibre.
分析了纤维收缩产生裂纹的机理。
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Crawling: Contraction to ink paper when it has not penetrated the surface.
墨蠕动：油墨末渗入纸内前的收缩情况。
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Crawling: Contraction to ink paper when it has not penetrated the surface.
墨蠕动：油墨末渗入纸内前的收缩情况。
youdao