On a ring network, the direction opposite to that of data flow.
在环形网络上，与数据流方向相反的比特流。对照。
The advantage of a ring network is that messages flow in only one direction.
环形网络的好处在于讯息是向一个方向流动的。
Retaining ring for continuous flow of water ;
带定位环，保持注水流畅；
Retaining ring for continuous flow of water ;
带定位环，保持注水流畅；
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