黑色金属 [材] ferrous metal
black metal
- 这个黑色金属板被称为集热器。
This black metal plate is called a collector. - 这块黑色金属板被称为集热器。
This black metal plate is called a collector. - 黑色金属(含钢的金属)通常的热处理方法为退火,正火,硬化以及回火。
The usual methods of heat-treating ferrous metals (metals with iron) are annealing, normalizing, hardening, and tempering.