我看一本书里说the number of states in the equivalent deterministic fsa may be exponential in the number of states of the nondeterministic one.可是,我记得不确定性的有限自动机转成等价的确定性的有限自动机的时候,状态会减少呀,感觉应该是确定性的有限自动机的状态数更少,求解答