In the blend fiber, stretching benefit to phase transiting of PVDF, but not PA11, and quenching benefit to phase transiting of PA 11, but not PVDF.
但拉伸对共混纤维中PA11的晶型转变影响较小而淬火却有利于PA11的晶型转变，但对其中的PVDF晶型转变影响不大。
Look at the book on pa 41 write 11 sentences .
对照课本第四十一页上的图画，写11 个句子。
Look at the book on pa 41 write 11 sentences .
对照课本第四十一页上的图画，写11 个句子。
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