The key of data communication is transmission of digital signal.

数字信号的传输是数据通信的关键。

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Data communication is important for a digital fault recorder in a power system.

数据通讯在电力系统微机故障录波装置中地位举足轻重。

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Data communication is important for a digital fault recorder in a power system.

数据通讯在电力系统微机故障录波装置中地位举足轻重。

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