“telescopic derrick”的概念、定义、翻译、参考文献-科学参考

单词	telescopic derrick
释义	telescopic derrick [¦tel·ǝ¦skäp·ik `de´rik] ^ENGINEERING A drill derrick divided into two or more sections, with the uppermost sections nesting successively into the lower sections.
随便看	nitrite nitro- nitroalkane nitroaromatic Nitrobacteraceae nitrobarite nitrobenzene nitrobromoform nitrocalcite nitrocellulose nitrocellulose filter nitrocellulose propellant nitrocotton nitro dye nitroethane nitro explosive nitrogelatin nitrogen nitrogen acid anhydride nitrogenase nitrogenated oil nitrogen balance nitrogen cycle nitrogen dioxide nitrogen fixation

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