Thus it is explained that a vector furc-tion space can be proiected into three uncrossed subspaces not only in Euclidean space but alsoin the subspace of vector wave functipn space.

• 由此说明了一个矢量函数空间不仅可以通过它在欧氏空间中的射影分解为三个不相交的子空间,同样可以通过它在矢量波函数系上的射影分解为三个不相交的子空间。