叉积

cross product (of vectors)

fork / pitchfork / prong / pick / cross / intersect / "X"

to cross / be stuck

to diverge / to open (as legs)

to amass / to accumulate / to store / measured quantity (such as area of volume) / product (the result of multiplication) / to integrate (math.) / to solve (or integrate) an ordinary differential equation (math.) / old / long-standing