logical relationˈlɔdʒikəlriˈleiʃən短语¹⁴⁴⁹⁷²⁺² 基本英英例句 逻辑关系式 Noun: a relation between propositions According to the logical relation among different basic events, the accident tree of machinery injury in mining well was compiled. 求出事故树最小割集、最上径集和各基本事件结构重要度。 cnki