名词
中文翻译：准无环
同义词：
['quasi-ring', 'quasi-ring structure例句：1. The quasi-nil ring in the center of the crystal is responsible for its unique properties.（晶体中心的准无环结构负责其独特的性质。）']
例句：
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1. The quasi-nil ring in the center of the crystal is responsible for its unique properties.
晶体中心的准无环结构负责其独特的性质。
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2.The quasi-nil ring is a fascinating concept that has been studied for decades.
准无环概念是一个引人入胜的概念，已经研究了几十年。
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3. The quasi-nil ring is a complex structure that requires careful analysis to understand its behavior.
准无环结构是一个复杂的结构，需要仔细分析才能理解其行为。