英语词汇needle steel是什么意思，needle steel的用法、释义、翻译、读音、例句、短语词组-英汉汉英翻译词典-觉斋网

单词	needle steel
释义	needle steel　针状组织钢, 加硼硬化亚共析钢
随便看	drill auger drill barrow drill bit drill bit drill bit drill bit drill block drill boat drill book drill boot drill bow drill bush drill bushing drill cable drill carriage drill centres drill chip drill chuck drill chuck barrel drill chuck jaw drill circuit drill collar drill colter drill column jack drill core

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