名词
中文翻译：硬度因子
同义词：
['strength factor', 'toughness index']
例句：
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1. The new material has atoughness factor of 80,which is significantly higher than the previous one.
这种新材料的硬度因子为80，明显高于之前的材料。
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2. In order to improvethe strength of the steel, researchers havedeveloped a toughness factor that can beused as an indicator.
为了提高钢材的强度，研究人员开发了一种可以作为指示器的硬度因子。
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3. The toughness factor isan important factor in determining the performance ofthe material.
硬度因子是决定材料性能的一个重要因素。