英语词汇“penetration rate”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 rate
释义	penetration rate penetration rate [‚pen·ə′trā·shən ‚rāt] (mechanical engineering) The actual rate of penetration of drilling tools.
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