partial derivative[英][ˈpɑ:ʃəl diˈrivətiv][美][ˈpɑrʃəl dɪˈrɪvətɪv]偏导数，偏微商; 例句1.The required partial derivatives are easily worked out.欲求的偏导数不难得出。

2.We also give the matrix forms of the interface partial derivative with multiple complex interfaces.给出了任意多个复杂界面情况下，反演时所需的走时对界面偏导数系数矩阵。