“普法夫-伯克霍夫原理”的概念、定义、翻译、参考文献-科学参考

单词	普法夫-伯克霍夫原理
释义	普法夫-伯克霍夫原理 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	X-ray orientator X-ray oscillation photograph X-ray peak broadening Xray peak broadening X-ray phase analysis Xray phase analysis x-ray phase analysis X-ray phase contrast imaging technique X-ray photoelectron X-ray photoelectron emission microscopy Xray photoelectron emission microscopy X-ray photoelectron spectroscopy Xray photoelectron spectroscopy X-ray photoelectron spectroscopy (XPS) X-ray photoelectron spectroscopy, XPS Xray photoelectron spectroscopy (XPS) X-ray photogrammetry X-ray photograph image intensifier X-ray photon X-ray photon-excited secondary electron emission microscopy X-ray photon-excited secondary electron emission microscopy, XPSEEM X-ray polarization X-ray powder camera X-ray powder diffractometer X-ray powder method

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。