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紫外线降解
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紫外线降解
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ultraviolet
紫外线降解
聚合物在紫外线作用下,出现外观和物理机械性能的劣化,通常表现为变色、出现银纹、龟裂以及拉伸强度、冲击强度、断裂伸长率下降等现象。聚合物光降解的主要形式,也是聚合物自然老化的主要原因之一。
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signed directed graph method
signed distance
signed graph
signed measure
signed measure space
signed-minor
signed number
signed rank
signed rank statistic
signed rank test
signed tree
signed value
signed volume
signer
sign function
sign graph
significance
significance arithmetic
significance level
significance point
significance probability
significance test
significant
significant bit
significant construction project of scenic and historic areas
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