“Pontryagin class”的概念、定义、翻译、参考文献-科学参考

单词	Pontryagin class
释义	Pontryagin class Physics ＞理论物理学＞数学物理＞释义 Pontryagin class庞特里亚金类 Mathematics ＞拓扑学与几何学＞代数拓扑学＞释义 Pontryagin class庞特里亚金类 Pontryagin class庞特里亚金类^†
随便看	China Qinqiang Opera Art Festival China quality award China quality award in aerospace industry China Quality Inspection Press China Quaternary Glacial Relics Exhibition Hall China Quyi Publishing House China Radar Industry Association China Radio and Television News Award China Radio and Television Press China Radio Arts Award China Radio Award China Radio Drama Award China Radio, Film and Television Awards China Radio International China Radio International，CRI China railway construction fund China Railway Express Co.,Ltd. China Railway Express to Europe China Railway High-speed China Railway Museum China Railway Publishing House China Railways JF China Railway Society China Reading Weekly China Record

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