It was also demonstrated by IR analysis that the hydrogen bonding between HDI based hard segments ...

 
  • 同時(shí)IR結果證明,HDI形成的硬段間的氫鍵作用更強,從而得到了比芳香族形狀記憶聚氨酯更高的形變回復率。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan