致的”,因此引用了数学形式,实际上对ε_g—ε_g的平行性关系并未能从数学上解决。因为原即假定ε_g—ε_g为直线,最后得出cotα=S只是兜了一个圈子又回到了原点。对苏联规范虽得出cotα=a,但未能揭示其实质相当于承认平行性关系,而且从下文可见这一推论能更容易 “Cause”, therefore cites the mathematical form, in fact the parallelism of ε_g_ε_g has not been solved mathematically because the original assumes that ε_g_ε_g is a straight line, and finally arrives at cotα=S is just a circle Returning to the origin, although the Soviet norm leads to cotα=a, failing to reveal its essence is equivalent to recognizing parallelism, and it can be seen from the following that this inference can be easier.