106 A , n, m , – 1 1 – T f f t f T f ( ; , , , ) A B m 10 n m 1 t (3.6) c 1 2 3 4 1 2 1 eq (2.12) t - W [117, 149]. C t 0 x y z t * t . * A A B 1 (2.13)