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信息载体的替代关系是指在信息载体体系中具有比较性能优势的新载体对具有比较性能劣势的旧载体主流地位的取代;信息载体的兼容关系则是指在信息载体体系中具有不同性能特征的信息载体之间相互依存、相互补充、彼此协调配合,并以一个整体的形象共同承担起信息交流使命的一种载体共处关系。载体的替代与兼容都是客观存在的,二者都是支配信息载体发展和演进的基本规律。
The substitution of information carrier refers to the substitution of new carrier with comparative advantage in information carrier system for the mainstream status of old carrier with comparative performance disadvantage. The compatibility of information carrier refers to the compatibility of information carrier system with different performance characteristics Information carriers are interdependent and complementary with each other and cooperate with each other. Together, they share the same mission of information exchange as a whole image. The substitution and compatibility of carriers are objective and exist, and both of them are the basic rules governing the development and evolution of information carriers.