要知道对着地图和介绍，合理安排好自己的时间和行程还是十分必要的，磨刀不误砍柴功哦。
Want to know the map and introduce to arrange their own time and travel or very necessary, sharpening will not delay your job of work well.
这种中继电路为程控用户交换机进入公用电话网提供了全自功入网能力，并易于进行程控用户交换机之间的组网。
This scheme provides the automatic trunking ability for PABX to enter the telephone network and connent with other PABX easily.
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