“variational principle of analytical mechanics”的概念、定义、翻译、参考文献-科学参考

单词	variational principle of analytical mechanics
释义	variational principle of analytical mechanics Encyclopedia 理学力学变分原理释 variational principle of analytical mechanics力学变分原理将力学基本方程的定解问题转换为求解泛函的极值或驻值的原理。
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