基本解释[数学]二重点积双点积英汉例句双语例句Now, when we want to compute the flux, we will have to do double integral over S of one, dxdy one, one dot product with 2x, 2y, one dxdy.现在计算通量,我们需要去做一个关于S的二重积分，是∫∫•double dot product更多例句专业释义数学二重点积双点积