无限小力 infinitesimal force 无限小转动 infinitesimal transformations 无限小变换 infinitesimal transformations formations ..
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The paper studies the form invariance of differential equations of motion for holonomic systems in terms of quasi coordinates, under the infinitesimal transformations of groups.
研究完整力学系统准坐标表示的运动微分方程在群的无限小变换下的形式不变性。
This paper discusses the unified symmetry of a holonomic mechanical system in terms of quasi-coordinates under special infinitesimal transformations in which time is not varied.
研究准坐标下完整力学系统在时间不变的无限小变换下的统一对称性。
According to the invariance theory of partial differential equations under the infinitesimal transformations, the symmetries and conserved quantities of classical fields are studied.
根据偏微分方程在无穷小变换下的不变性理论，研究经典场的对称性质和守恒量。
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