常見例句雙語例句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(xiàn)在計(jì)算通量,我們需要去做一個(gè)關(guān)於S的二重積分，是∫∫? 返回 double dot product