名词
中文翻译：内涂层钻杆
同义词：
['inner coat', 'internal casing', 'inner lining']
例句：
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1. Thedrill pipe was coated with a layer of oil to protect it from corrosion.
钻杆被涂上了一层油以保护它免受腐蚀。
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2. The engineer used a special tool to remove the internal coating before installing the new pipe.
工程师使用一种特殊的工具在安装新管道之前去除内部涂层。
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3.The drilling process requires the use of internal coatings to prevent damage to the drill pipe.
钻井过程需要使用内部涂层来防止对钻杆的损坏。