用The Crossing造句子，“The Crossing”造句

2、The Crossing Numbers of W_(3,n) and K_m□C_n;

1、The Crossing Number of Flower Snark and K_m-e□P_n;

3、The Crossing Number of Cartesian Product of P_n with Circulant Graph C(10,2)

4、The Crossing Numbers of Cartesian Products of Paths with 6-Vertex Graphs