The principle of equivalent accuracy measuring frequency, implement circuit and part of testing programs are introduced.
文章介绍了等精度测频原理，实现电路及部分测试程序流程。
In the article, the detecting principle is discussed, the specific hardware implement circuit and software designing are given and the system is proved by experiment.
文中讨论了系统的检测原理，给出了具体的硬件实现电路、软件设计，并对系统进行了实验验证。
In the article, the detecting principle is discussed, the specific hardware implement circuit and software designing are given and the system is proved by experiment.
文中讨论了系统的检测原理，给出了具体的硬件实现电路、软件设计，并对系统进行了实验验证。
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