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Packet switching does not require a dedicated line between the sender and recipient.
包交换不需要在发送方和接收方之间使用专用线路。
Therefore, study of the scheme of passenger dedicated line is a desiderate task at present.
因此, 客运专线列车开行方案的研究是当前亟待解决的重要课题。
The main OCS inspection projects and technology standard of passenger dedicated line are introduced.
介绍了客运专线接触网检测的主要项目和技术标准。
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