Mainly used in unsaturated polyester composite material to improve the mechanical property, electric property, photic property, especially, greatly improve the wet property of composite material.是什么意思_Mainly used in unsaturated polyester composite material to improve the mechanical property, electric property, photic property, especially, greatly improve the wet property of composite material.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句