The film has a core layer of cyclic olefin copolymer (COC), outer layers of polypropylene and a surface layer of polyethylene laminate.是什么意思_The film has a core layer of cyclic olefin copolymer (COC), outer layers of polypropylene and a surface layer of polyethylene laminate.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句