名词短语
中文翻译：能量状态的密度
同义词：
['energy density', 'energy state density']
例句：
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1.The study focused on the relationship between energy state and economic growth.
该研究专注于能量状态与经济增长之间的关系。
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2. The density of the material is crucial for its performance.
材料的密度对其性能至关重要。
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3.The researcher found that the density of the substance was higher in the cold environment.
研究者发现，该物质在低温环境下的密度更高。