As a key professional specialty course of electronic information technology, program-controlled exchange has been set up at various colleges and universities generally.
程控交换技术作为电子信息类专业重要专业课程，已在各高校普遍开设。
As a key professional specialty course of electronic information technology, program-controlled exchange has been set up at various colleges and universities generally.
程控交换技术作为电子信息类专业重要专业课程，已在各高校普遍开设。
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