英语词汇“可将钻孔延深至数米”的翻译、意思、用法、释义-英汉汉英双解词典

单词	可将钻孔延深至数米
释义	可将钻孔延深至数米 The extension drill rod which can be used for higher capacity drill；the drill hole can be extended to sezeral meetrs；when drilling the straight hole；the core lifter can help coring.
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