本文首先深入研究了单端口环网结构上全交换操作的实现算法。
First of all, this dissertation extensively studied the algorithms for complete exchange on single-port torus.
易操作维护的结构设计，全正面维护结构，易打开的前面板设计，机组维护方便易行，灵活的机组安装方式。
Structure design for easy operation and maintenance and installation allows to access in front of panel.
本机特点：采用全机械结构，运转平稳，速度快，效果好，噪音低，结构简单，操作及维修方便，故障率低。
Features: The machine was characterized by mechanism structure, stable operation, high speed, high efficiency, low noise, simple structure, convenient operation and maintenance and less fault.
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