| 释义 |
ce·men·ta·tion
\ˌsēˌmenˈtāshən\ noun
(-s)
1. : the act or process of cementing : the state of being cemented
< cementation of sand into stone >
2.
a. : a process that consists in surrounding a solid body with the powder of other substances and heating the whole to a degree not sufficient to cause fusion, the physical properties of the body being changed by chemical combination with the powder
< iron becomes steel by cementation with charcoal >
< green glass becomes porcelain by cementation with sand >
b. : the process of obtaining a metal from a solution of one of its compounds by precipitation with another metal (as the obtaining of copper from a solution of copper sulfate by means of metallic iron) |