The elastic recovery of melt-spun spandex can be improved by melt spinning self-made terminated polyurethane pre-polymer and spandex resin.是什么意思_The elastic recovery of melt-spun spandex can be improved by melt spinning self-made terminated polyurethane pre-polymer and spandex resin.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句