Case-hardened steel
volume
British pronunciation/kˈeɪshˈɑːdənd stˈiːl/
American pronunciation/kˈeɪshˈɑːɹdənd stˈiːl/

تعريف ومعنى "case-hardened steel"

Case-hardened steel
01

steel with a surface that is much harder than the interior metal

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