Fly ash can meliorate IIobviously the transient zone of interface of the cement paste and aggregate.

粉煤灰对混凝土界面区这个薄弱环节有明显的改善作用。

youdao

Fly ash can meliorate IIobviously the transient zone of interface of the cement paste and aggregate.

粉煤灰对混凝土界面区这个薄弱环节有明显的改善作用。

youdao