case harden

短语

[机] 铁材料之使表面硬化, 表面淬火

词形变化

case hardened case hardening case hardens 三单 case hardens case hardening 现在分词 case hardened 过去式 case hardened 过去分词

释义与例句

v.
  1. 1.

    To impart greater hardness to the surface of a piece of metal.

    工程