The fractional crystallinity increases as the increase of the SSP temperature and reaction extent.There is a new crystal formation with the development of solid state polycondensation for PET pellets.是什么意思_The fractional crystallinity increases as the increase of the SSP temperature and reaction extent.There is a new crystal formation with the development of solid state polycondensation for PET pellets.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句