อบชุบแข็ง(òp chúp kăeng)

Meanings

1VerbC1

[to] harden [sth] by heat treatment

to make metal harder by heat treatment, usually by heating it and then cooling it quickly

Examples

3 more examples
2NounC1

heat treatment; hardening

a heat-treatment process used to make metal harder, usually by heating it and then cooling it quickly

Examples

3 more examples