By adding molecular weight modifier to control rheological behaviour of PP, the small batch bulk PP powder was modified into the special material for spunbond nonwovens.是什么意思_By adding molecular weight modifier to control rheological behaviour of PP, the small batch bulk PP powder was modified into the special material for spunbond nonwovens.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句