在非确定的有限自动机NFA中,由于某些状态的转移需从若干个可能的后续状态中进行选择,故一个NFA对符号串的识别就必然是一个试探的过程。这种不确定性给识别过程带来的反复,无疑会影响到FA的工作效率，所以我们有必要将NFA确定化。-In the non-deterministic finite automaton of the NFA, because of the transfer of certain state to be from a number of possible follow-up to the state to choose, so a NFA identification string of symbols must be on a trial process. This uncertainty to the recognition process brought about by repeated, it will undoubtedly affect the efficiency of the FA, so we need to determine of NFA.