复合函数的导数是构成函数的导数之积。
The derivative of the composite function is the product of the derivatives of the components.
本文建立了多元复合函数的二阶偏导数公式。
In this paper, the formula of partial derivative of second order on compound function of many varables is established.
设计变量可包含复合材料结构的铺层方向角。广义气动力导数计及正交振动形态导数的影响。
The design variables include the ply orientations of composite material, and the derivatives of generalized aerodynamic forces involve normal modes derivatives.
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