首先，用串口直连电缆连接到每台交换机的串行控制端口(9600、8 - n - 1、无流控制)，使用默认用户ID admin，无密码。
First, connect to each switch using the serial console port with a straight serial cable (9600, 8-n-1, no flow control) with a default user ID admin and no password.
无焊连接。第1部分：无焊绕接。一般要求试验方法和使用指南。
Solderless connections - part 1: wrapped connections - general requirements, test methods and practical guidance.
研究结果：在同样荷载条件下，板层之间无紧密连接的无碴轨道的板层拉应力要大于板层有紧密连接结构的拉应力；
Research results: Under the same load condition, the tensile stress of ballastless track slabs without close connected is bigger than that of slabs with close linkage structure.
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