“Pfaff-Birkhoff principle”的概念、定义、翻译、参考文献-科学参考

单词	Pfaff-Birkhoff principle
释义	Pfaff-Birkhoff principle Encyclopedia 理学力学变分原理释 Pfaff-Birkhoff principle普法夫-伯克霍夫原理将G.D.伯克霍夫在1927年给出的一类积分变分原理推广到包含时间的情形从而得到的积分变分原理。
随便看	tumor marker examination tumor necrosis factor superfamily tumor of chest wall tumor of ear tumor of the bladder tumor of the testis tumor-related fatigue tumors involved visual pathway tumors of external auditory canal tumors of uveal tract tumor specific antigen，TSA tumor suppressor gene tumor vaccine Tumote Plain tumour tumour dose tumour-inducing plasmid tumour interventional radiology tumour necrosis factor tumour specific antigen tumour thick-shell mussel Tum Teav Tumubao Tumuji national nature reserve tumula

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