The design principle and circuit construction and program process of apparatus of the best ignition angle for motorcycle engine are introduced.
介绍了一种摩托车发动机最佳点火角试验仪的设计原理、电路结构和程序流程。
About how to obtain and process the signal of fetal heartbeat, I had gave the detail introduction, at the same time, I gave a detailed electric circuit construction.
文中对胎儿心音信号的获得，心音信号的处理进行了详细的介绍，并给出了详细的电路结构。
About how to obtain and process the signal of fetal heartbeat, I had gave the detail introduction, at the same time, I gave a detailed electric circuit construction.
文中对胎儿心音信号的获得，心音信号的处理进行了详细的介绍，并给出了详细的电路结构。
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