以犁煤器为控制对象，通过找出影响其抬起和落下的关联条件，设计出了通用的PL C功能块。
Taking coal plough as control object and finding association condition influencing on lifting and falling of coal plough, it designed general PLC function block.
以犁煤器为控制对象，通过找出影响其抬起和落下的关联条件，设计出了通用的PL C功能块。
Taking coal plough as control object and finding association condition influencing on lifting and falling of coal plough, it designed general PLC function block.
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