| 单词 |
secondary hardening |
| 释义 |
secondary hardening secondary hardening[′sek·ən‚der·ē ′härd·ən·iŋ] (metallurgy) The hardening of certain alloy steels at moderate temperatures (250-650°C) by the precipitation of carbides; the resultant hardness is greater than that obtained by tempering the steel at some lower temperature for the same time. |
| 随便看 |
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