硬化

Verb

 * 1) to harden; to become hard
 * 2)  to become rigid or inflexible

Noun

 * 1)  sclerosis

Noun

 * 1) hardening
 * 2)  sclerosis

Verb

 * 1) to harden
 * 2) to freeze
 * 3) to cure, become hard
 * 4)  to sclerose