名词短语
中文翻译：等价元素
同义词：
['equivalent element', 'equivalent element to', 'equivalent to an element']
例句：
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1. The studyof quantum mechanics is equivalent to studying the behavior of elements in a gas.
量子力学的研究相当于研究气体中元素的行为的等效。
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2. In physics, the concept of equivalence is often used to describe how two systems are equal in terms of their properties.
在物理学中，等效的概念经常被用来描述两个系统在性质上是相等的。
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3. The equivalence of these two theories has been debated for decades.
这两个理论的等效性已经争论了几十年。