Last,fraction energy,impermeability and impact resistence and abrasion resistance of fiber cement concrete with small polypropylene fiber content is researched.

 
  • 以及研究了低掺量聚丙烯纤维混凝土的断裂能、抗渗性、抗冲击性和耐磨性等。
今日热词
目录 附录 查词历史