名词中文翻译
中文翻译：空系数
同义词：
['null coefficient', 'void coefficient']
例句：
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1.The coefficient of friction between the two materials is very low.
两种材料的摩擦系数非常低。
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2. The coefficient of thermal expansion for this material is quite high.
这种材料的热膨胀系数相当高。
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3. The coefficient of refraction is an important factor in determining the speed of light.
折射率是决定光速的一个重要因素。