名词中文翻译
中文翻译：摩擦指数
同义词：
['friction index', 'frictional index', 'coefficient of friction']
例句：
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1. The new car has a high frictional index, which makes it difficult to start.
这辆新车的摩擦指数很高，启动起来很困难。
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2. The researchers found that the frictional index was related to the material's hardness.
研究人员发现摩擦指数与材料的硬度有关。
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3. The frictional index is an important factor in determining the performance of a machine.
摩擦指数是决定机器性能的一个重要因素。