When the combination ratio of PS and BR was 100/40, the comprehensive properties of SBS could be improved by adding 30 phr PS/BR masterbateh.是什么意思_When the combination ratio of PS and BR was 100/40, the comprehensive properties of SBS could be improved by adding 30 phr PS/BR masterbateh.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句