differential expansion

• 不均匀膨胀

differential expansion的用法和样例：

例句

1. The cracking of mortars induced by delayed ettringite formation is due to the uniform expansion of microcrystalline ettringite in the hardened mortars.
   延迟钙矾石生成所导致的试件开裂是由于微晶状钙矾石在硬化砂浆中均匀膨胀所致。