STUDIES ON THE SYNTHESIS OF GRAFTED COPOLYMER POLYOL WITH DIMETHYL ALLY PHOSPHITE ONTO UNSATURATED FLAME RETARDANT POLYETHER POLYOL是什么意思_STUDIES ON THE SYNTHESIS OF GRAFTED COPOLYMER POLYOL WITH DIMETHYL ALLY PHOSPHITE ONTO UNSATURATED FLAME RETARDANT POLYETHER POLYOL在线翻译_英语_读音_用法_例句