英语词汇“telescopic derrick”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	telescopic derrick
释义	telescopic derrick telescopic derrick [¦tel·ə¦skäp·ik ′de‚rik] (engineering) A drill derrick divided into two or more sections, with the uppermost sections nesting successively into the lower sections.
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