Synergistic effect on the toughening of PVC took place when PTW and elastomers were blended with PVC within a reasonable mass ratio of PTW ...是什么意思_Synergistic effect on the toughening of PVC took place when PTW and elastomers were blended with PVC within a reasonable mass ratio of PTW ...在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句