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1·Package content: Fingerprint security access system. Mounting adapter ring.

包装内容：指纹安全门禁系统，安装转接环。

2·A frame sent by an adapter indicating a serious ring problem, such as a broken cable.

由适配器发送的一种帧，指示出现了严重的环路问题，如电缆断开。

3·This paper introduces the implement methods of a high-speed optical interconnection network adapter for double token-ring network topology cluster.

介绍了一种面向机群系统双环形网络拓扑结构的高速光互联网络适配器的设计和实现方法。