力对点之矩的矢量运算 ij k Mo(F)=r F=x z FF. F F (Fy-F)i+(F=-Fx)j+(Fxx-Fiy)kMo ( F ) = r F = (Fzy-Fy z) i +(Fx z-Fzx) j+(Fyx-Fxy) k 力对点之矩的矢量运算 i j k x y z Fx Fy Fz = F Fx Fy Fz x z y r