基本解释[數學]二重點積雙點積英汉例句雙語例句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.現在計算通量,我們需要去做一個關於S的二重積分，是∫∫•double dot product更多例句专业释义數學二重點積雙點積