Polypropylene: Plastic film rather like clear polythene. Its oriented form is the most common material for film lamination. See OPP film.是什么意思_Polypropylene: Plastic film rather like clear polythene. Its oriented form is the most common material for film lamination. See OPP film.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句