名词
中文翻译：管壁
同义词：
['pipe face', 'inner wall of a tube', 'inner surface of a tube']
例句：
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1. The engineer used the tube face to create a smooth surface for the new pipe.
工程师使用管壁来为新管道创造一个光滑的表面。
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2. The scientist studied the tube face to understand how it affects the flow of gases.
科学家研究管壁以了解它如何影响气体流动。
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3.The construction workers had to remove the tube face before they could install the new pipes.
建筑工人在安装新管道之前必须拆除管壁。