case-hardened steel是什么意思 case-hardened steel怎么读
case-hardened steel的英文翻译是什么意思，词典释义与在线翻译
Noun:- steel with a surface that is much harder than the interior metal
case-hardened steel的用法和样例
- The flywheel is made from carbon steel.
飞轮由碳钢制成。 - The material could be either carbon steel or stainless steel.
材料可以是碳钢的或者是不锈钢的。
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