英语词汇“double-core barrel drill”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	double-core barrel drill
释义	double-core barrel drill double-core barrel drill [¦dəb·əl ‚kȯr ′bar·əl ‚dril] (design engineering) A core drill consisting of an inner and an outer tube; the inner member can remain stationary while the outer one revolves.
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