混凝土膨胀剂的功能是使硬化后的混凝土产生一定的体积膨胀，抵销混凝土硬化早期产生的体积收缩。
Concrete expansion function is to produce a certain volume expansion after concrete hardening of concrete to eliminate concrete early hardening volume contraction.
可是他在21岁的时候，出现了肌萎缩性（脊髓）侧索硬化的征兆；这一疾病不可避免地要导致瘫痪，使他很多事都不能做。
But at age 21 he developed the first symptoms of amyotrophic lateral sclerosis (ALS), a disorder that would inevitably render him paralyzed and incapable of performing most kinds of work.
高温使陶土硬化。
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