With the development of building technology, the need of construct materials is more and more, especially to the high strength and long perdurability of concrete. 随着建筑技术的发展,人们对结构材料的要求越来越高,尤其是对混凝土的高强性和耐久性的要求越来越高。
high strength structural material怎么读 high strength structural material是什么意思