This text is about a device of discerning the value Chines coins through the designing of foucault currents sensor.

本文介绍用电涡流传感器研制的能够识别人民硬币面值的装置。

youdao

This text is about a device of discerning the value Chines coins through the designing of foucault currents sensor.

本文介绍用电涡流传感器研制的能够识别人民硬币面值的装置。

youdao