Urea and its monomeric species were as scavenger of formaldehyde in the resin.

 
  • 尿素及其衍生物對 于該類(lèi)樹(shù)脂而言,僅僅起到的是甲醛捕捉劑的作用。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan