prime implicant meaning in English

素项
素蕴含

After then , a new method of solving the minimal cuts of s - coherent tree based on bdd and prime number was given in the qualitative analysis of fta based on bdd , the prime implicant sets of non s - coherent tree was calculated by an iterative method
再次，在基于bdd的故障树定性分析研究中，提出并实现了基于bdd和素数法相结合的单调关联故障树最小割集求解的新方法，用迭代法实现了非单调关联故障树质蕴含的求解。