本文介绍一种用实验室现成器材组装的示教多用电表，可以很好地做演示实验和讲解其原理。

This text introduces a kind of multi-purpose ammeter assembled from ready-made teaching electric circuit board, which can be used for experiment for demo at experiment for principle-explaining.

youdao

本文介绍一种用实验室现成器材组装的示教多用电表，可以很好地做演示实验和讲解其原理。

This text introduces a kind of multi-purpose ammeter assembled from ready-made teaching electric circuit board, which can be used for experiment for demo at experiment for principle-explaining.

youdao