caseharden

vt. 使无情, 使表面硬化

词形变化

casehardened casehardening casehardens 三单 casehardens casehardening 现在分词 casehardened 过去式 casehardened 过去分词

别名

case harden

释义与例句

v.
  1. 1.

    To harden the surface of iron or steel by infusing carbon into the surface layer.

  2. 2.

    To make insensitive to hardship.

    引申义

词源

From case + harden.

来源：wiktionary