“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	The Pavilion of My Bamboo Seclusion in Humble Administrator's Garden The Pavilion of the Second Spring in WuXi The Peach Blossom Fan The Peach Blossom Land The Peach Girl the Peach Orchard The Peacock Flies Southeast The Peacock’s Gallbladder the Pear Garden Monument inside You’an Gate of Beijing The Pearl Phoenix the pearl river delta city region the Pearl river delta model The Pear Stories The Peasants The Peasant Wedding The Peddler and the Beauty The Peking Magazine The Pekin Syndicate Limited The Penal Code of the Soviet Union in 1922 The Penal Code of the Soviet Union in 1960 The Pen League The Pennsylvania Magazine the pens unearthed in Qin and Han dynasties The Peony Pavilion the people

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