英语词汇“penetration speed”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	penetration speed
释义	penetration speed penetration speed [‚pen·ə′trā·shən ‚spēd] (mechanical engineering) The speed at which a drill can cut through rock or other material.
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