名词
中文翻译：径向表面
同义词：
['circumferential surface', 'radial surface']
例句：
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1.The machine has a diametral surface that is smooth and easy to clean.
这台机器有一个光滑且易于清洁的径向表面。
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2. The diametral surface of the gearwheel is crucial for its efficiency.
齿轮轮的径向表面对其效率至关重要。
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3. The diametral surface of the engine block is designed to reduce vibrations.
发动机缸体的径向表面设计用来减少振动。