principle norm原则性规定principlen.原理；原则；主义；信念principle of equal advantage利益均等原则principle component analysis主成分分析principle of logic mechanics逻辑力学原理principle of stratificaition分层原理principle of kindheartedness仁爱原则principle of inaccessibility[化] 绝热不可达到原理principle of contemporaniety现行性原则principle component analyses主成分分析principle of maximum entropy最大熵原理Principle of Classic Poetics古典诗学原则