Through calculation and comparison , Data can also understand that the accuracy of rounding error and a series of other relevant factors.

并且通过计算比较，也可以了解到数据的精度及舍入误差等一系列有关因素。

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While PLC logic control, data operations, data comparison, data transmission through the process of combining organic and not only control the traffic light changes, as well as the time display.

同时将PLC的逻辑控制、数据运算、数据比较、数据传送通过程序有机的结合起来，既控制交通灯的变化，还有时间显示。

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Then, this thesis studies the controlled vortex flow method. Through the comparison of design data, the advantage of controlled vortex flow is revealed.

其次，本文又进行了控制涡流设计的研究，通过设计数据的对比，体现出了控制涡流方法的优势。

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