形容词
中文翻译：周期性的
同义词：
['recurrent', 'recurring例句：1. The periodic table of elements is a useful tool for understanding the properties of different elements.（元素周期表是了解不同元素性质的有用工具。）2. The periodic table of the elements is used to organize the elements by their chemical properties.（元素周期表是用来按化学属性组织元素的。）']
例句：
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1. The periodic table of elements is a useful tool for understanding the properties of different elements.
元素周期表是了解不同元素性质的有用工具。
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2. The periodic table of the elements is used to organize the elements by their chemical properties.
元素周期表是用来按化学属性组织元素的。
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3. The periodic table of the elements is used in chemistry and other fields to explain the behavior of substances based on their chemical properties.
元素周期表在化学和其他领域被用来根据物质的化学属性来解释其行为。