求翻译：Since the conjugated polymer chains are very stiff, they are typically insoluble, intractable and decompose before melting.是什么意思？

待解决

悬赏分：1 - 离问题结束还有

Since the conjugated polymer chains are very stiff, they are typically insoluble, intractable and decompose before melting.

问题补充：

匿名	2013-05-23 12:26:38 自共轭的聚合物链变得很僵硬，他们通常不溶、难治性和分解熔融前。

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