英语词汇extra hard steel是什么意思，extra hard 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	extra hard steel
释义	extra hard steel　极硬钢, 金钢石钢
随便看	daily allowance daily allowance daily allowance daily audit daily average daily average daily average value daily backup volume daily balance daily bread daily bread daily bread daily bread daily bulletin daily bulletin daily capacity daily cash balance daily cash balance book daily cash report daily cause list daily charter daily check daily coal shipment daily collection record book daily consumption

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