We found that the reaction cross sections of the two systems first increase and then decrease as collision energy increases at given vibrational-rota- tional quantum number (n_0j_0), except n_0=0 and j_0=1;

• 计算结果表明,在指定反应物分子的振动态n_0、转动态j_0时,两个反应体系的反应截面随相对平动能的增加先是增加后是减小(j_0=1,n_0=0除外);