principle model主模型principlen.原理；原则；主义；信念principle of evolutionary continuity进化连续性理论PRINCIPLE OF BUSINESS LETTER WRITING商务信函的写作原则principle of electromagnetic inertia电磁惯性原理Principle of Maximum Differentiation最大差异化principle of system ethics' priorityprinciple of distribution difference分配差别原则Principle of the People's LivelihoodPrinciple of honesty and credibility诚实信用原则Principle on Change of Circumstances略论情势变更原则principle force of tech-innovation技术创新主体