Early age cracking caused by shrinkage is an important reason for the deteriorations of cement-based materials and reduction of volume stability.
早期收缩开裂是导致水泥基材料劣化及体积稳定性不良的重要原因。
2
This article argues that the tiger calamities related not only to the environmental deteriorations caused by excessive cultivations, but also to the serious destructions of society caused by war.