非屏蔽双绞线这种电缆属于3类，因此不推荐用于工业环境中使用。
Unshielded twisted pair This type of cable belongs to category 3, and is not recommended for use in an industrial environment.
一种工业网络，它使用令牌环点对点通讯模式传输数据，可达一百万位每秒。网络介质使用屏蔽双绞线。
An industrial networking system that USES token-passing peer-to-peer communications at data transfer rates of one megabit per second (MBPS). The network media is shielded twisted-pair cable.
一种工业网络，它使用令牌环点对点通讯模式传输数据，可达一百万位每秒。网络介质使用屏蔽双绞线。
An industrial networking system that USES token-passing peer-to-peer communications at data transfer rates of one megabit per second (MBPS). The network media is shielded twisted-pair cable.
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