The structure of auxiliary function is one of the important contents in the mathematics teaching, it is one of the important solution approaches that students should grasp too.
辅助函数的构造是高等数学教学中的重要内容之一，也是学生所要掌握的重要的解题方法之一。
Taking nc lathe system as an object, the thesis focus on the structure of Open architecture nc system and researches the achievement of auxiliary function of nc lathe system based on PLC.
论文以数控车床控制系统为对象，对开放式数控系统的体系结构进行了研究，以基于PLC的开放式数控车系统为切入点，对开放式数控车系统的辅助功能实现进行了深入研究。
Taking nc lathe system as an object, the thesis focus on the structure of Open architecture nc system and researches the achievement of auxiliary function of nc lathe system based on PLC.
论文以数控车床控制系统为对象，对开放式数控系统的体系结构进行了研究，以基于PLC的开放式数控车系统为切入点，对开放式数控车系统的辅助功能实现进行了深入研究。
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