The article introduced the measurement principle, hardware circuit and software process of a kind of mine locomotive intelligent speed mileometer, which have the function of "black box".

介绍了一种具有黑匣子功能的矿机车智能型速度里程表的测量原理、硬件电路设计和软件程序流程。

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In the article, the measurement principle, hardware circuit and software process of a kind of mine locomotive intelligent speed mileometer are introduced, which have the function of "black box".

介绍具有黑匣子功能的矿机车智能型速度里程表的测量原理、硬件电路设计和软件程序流程。

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A study was made on the behaviour of NR compounds filled with acetylene black and super conductive black in the circuit of the current at the industrial frequency.

以乙炔炭黑和高导电炭黑填充天然橡胶，研究其在工频电流电路中的特性。

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