UV decomposition theory is an efficient method dealing with the second order expansion of nonsmooth functions. It is obtained via the U Lagrangian that a function f has second order expansions along smooth trajectories.是什么意思_UV decomposition theory is an efficient method dealing with the second order expansion of nonsmooth functions. It is obtained via the U Lagrangian that a function f has second order expansions along smooth trajectories.在线翻译_英语_读音_用法_例句