名词
中文翻译：环形扩张
同义词：
['circumferential expansion', 'radial expansion']
例句：
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1. The ring expansion of the planet is a significant factor in its climate.
行星的环状扩张是其气候的一个重要因素。
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2. The radial expansion of the star is due to nuclear fusion.
恒星的径向扩张是由于核聚变引起的。
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3. The circumferential expansion of the ocean is caused by wind and tides.
海洋的环状扩张是由风和潮汐引起的。