6×3读作*[8J,X5q'[-[2v8U乘以.g4j+F6a3y(u4D0P3G;k+`，表示,P(E-x'B2Z9y)D5},`-C7X4G7b*J8G个0Y;]5a+p/e5e8O连加。3f9I0s9V1|3V/U-B8v7_1k2m1|
3×6读作0S+A8q-Z-C9[0u;q6o乘以(t-c9@4H3P0B:P1y，表示8I'?;D8K)A9[;~*L3J个9K,g(Y.t)p6l5Y-|,g连加。3f9I0s9V1|3V/U-B8v7_1k2m1|