A preparation method of urea-formaldehyde resin adhesive with low free formaldehyde content and high adhesive strength was presented.

 
  • 介紹了含游離甲醛低的粘結強度大的建筑行業(yè)用脲醛樹(shù)脂粘合劑的制備方法。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan