“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	simultaneous distribution simultaneous eigenfunction simultaneous eigenfunctions simultaneous eigenstate simultaneous engaging/disengaging of rollers simultaneous equation method simultaneous equation model simultaneous equations simultaneous equations model simultaneous estimation simultaneous events simultaneous exploration of coal and uranium simultaneous exploration of oil and potash simultaneous exploration of oil and uranium simultaneous fault simultaneous fermentation simultaneous game simultaneous homogeneous approximation simultaneous inequalities simultaneous inference simultaneous integral equations simultaneous interpreting simultaneous interval estimation simultaneous invariants simultaneous iteration

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