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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Make system this can meet economy, flexibility, systematic ness, request of dependability totally.

从而使本系统完全能满足经济性 、 灵活性 、 系统性及可靠性的要求.

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