介绍一种电源改进的装置，阐述其设计的原理、组装及使用方法等。
This article introduced a kind of power device for copper electrode preparation experiment, stating the designing principle, assembling and use of this device.
介绍一种电源改进的装置，阐述其设计的原理、组装及使用方法等。
This article introduced a kind of power device for copper electrode preparation experiment, stating the designing principle, assembling and use of this device.
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