名词
中文翻译：密集核心
同义词：
['dense core region', 'dense core material']
例句：
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1. Thedense core of the planet is composed mainly of iron and nickel.
这个行星的密集核心主要由铁和镍组成。
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2.The study of the dense core of the Earth has led to many new discoveries.
对地球密集核心的研究已经导致了许多新的发现。
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3. The dense core of the star is believed to contain a super-dense material that powers the star.
恒星的密集核心被认为包含一种超级密集的物质，这种物质为恒星提供动力。