The effect of plasticizer DOP on the ultraviolet light(UV) ageing properties of PVC was studied by means of mechanical properties test, SEM and FT-IR.是什么意思_The effect of plasticizer DOP on the ultraviolet light(UV) ageing properties of PVC was studied by means of mechanical properties test, SEM and FT-IR.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句