“mast/derrick”的概念、定义、翻译、参考文献-科学参考

单词	mast/derrick
释义	mast/derrick Encyclopedia 工学井架释 mast/derrick井架在钻井或修井过程中，用于放置天车，悬挂顶驱、游车、大钩等设备，存放钻杆、油管及抽油杆，以便进行起下钻具、钻进、下套管等作业的装置。
随便看	bus structure Bussy D'Ambois Bustamante Code bus technology Buster Keaton bus terminal station bustle bust of Queen Nefertiti bus topology bus (tram）stations bus transfer facilities Busulfan Busy as busy-back capacitor busy beaver busy channel busy cycle busy-flash signal busy period busy queueing system busy waiting but 3 en 1 ol but-3-en-1-ol butachlor butadiene

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