This paper presents a survey of system model simplification theory.
本文对系统模型的简化理论进行评述。
It can reduce the rate of transmission failure, and make system simplification, maintenance expediently.
这样就减少了传送失败的概率，并且使系统构成简单，方便维护。
It can reduce the rate of transmission failure, and make system simplification, maintenance expediently.
这样就减少了传送失败的概率，并且使系统构成简单，方便维护。
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