Position: Above-mentioned vegetables' lining up to block greatly in the bus station can see, don't believe what orthodox school, the flavors are all just about, which cheapness enter which house!
位置：上述菜名在汽车站大排挡都能看到，不要相信什么什么正宗啊，味道都差不多的，哪家便宜进哪家！
In this paper, the principle from analog regulation to digital regulation is explained, as an example, a block diagram and experimental set-up for position regulation system are introduced.
本文从原理上说明了如何从模拟调节实现数字调节，又以位置调节系统为例介绍了方框图并简单介绍了实验装置。
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