名词
中文翻译：双层壁钻孔管
同义词：
['双壁钻孔管例句：1. The double-walldrill pipe is used for drilling throughrocky terrains.（双层壁钻孔管用于钻穿岩石地形。）2. The engineerdesigned the double-walldrill pipe to improve drillingefficiency.（工程师设计了双层壁钻孔管以提高钻探效率。）3. The double-wall drill pipe wastested in various environments to ensureits durability.（双层壁钻孔管在不同环境下进行了测试，以确保其耐用性。）']
例句：
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1. The double-walldrill pipe is used for drilling throughrocky terrains.
双层壁钻孔管用于钻穿岩石地形。
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2. The engineerdesigned the double-walldrill pipe to improve drillingefficiency.
工程师设计了双层壁钻孔管以提高钻探效率。
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3. The double-wall drill pipe wastested in various environments to ensureits durability.
双层壁钻孔管在不同环境下进行了测试，以确保其耐用性。