progressive hardening

英 [progressive hardening]
美 [progressive hardening]

中文释义

顺序淬火,(高速钢的)二次硬化

单词分析

单词结构：

progressive hardening

字母数：21

记忆提示

🎯 重点记忆：

  • 单词拼写：progressive hardening
  • 核心含义：顺序淬火,(高速钢的)二次硬化

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更新时间：2025-12-09 17:33:55