n.駕滑冰船
With the early frostbiting and its principle, it is concluded that freezing resistance of concrete during early setting process has much relevance to the formed microstructure of cement stone. 從混凝土的早期凍害及機理入手，得出了硬化初期混凝土的抵抗凍害與水泥石微觀結(jié)構(gòu)形成有密切關(guān)系。
