名词短语
中文翻译：纯理论
同义词：
['pure theory', 'theoretical basis']
例句：
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1. The theory of pure line iscrucial for understanding the mechanism of the reaction.
纯理论对于理解反应机制至关重要。
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2. Thedevelopment of pure line theory has greatly promotedthe progress of science and technology.
纯理论的发展极大地推动了科学技术的进步。
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3. Thetheory of pure line providesa solid foundation for further researchin this field.
纯理论为这一领域的进一步研究提供了坚实的基础。