The system becomes logically closed when each of the logical implications which can be derived from any one proposition within the system finds its statement in another proposition in the same system.
当可以从系统中的任何一个命题派生出的每一个逻辑蕴涵在同一系统中的另一个命题中找到它的陈述时，系统在逻辑上就封闭了。
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System
Closed