Using the coordinate linkagefunction of total station, we can easily apply the method of forward intersection.
利用全站仪坐标联动功能，可方便地应用前方交会法，为这个问题提出了一种有效的解决方法。
2
The prodution line adopts the PLC control system and human-machine interface, easy to operate and with linkagefunction.
生产线采用PLC控制系统，人机对话界面，操作简便；具有联动功能。
3
They show that the tasks that have the linkage (View, Update and Delete) must first select an article to act upon before performing their task-specific function.