其中一个是找出一个函数的极小值，极大值，这个函数的变量是相关的，这种方法称为拉格朗日乘数法。
One of them is to find the minimum of a maximum of a function when the variables are not independent, and that is the method of Lagrange multipliers.
特洛伊银河体系：为双体系统中拉格朗日点上一个天体的，尤指小行星，或与之相关的。
Of or relating to a celestial body, especially an asteroid, that is in one of the Lagrangian points of a two-body system.
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