A practical circuit is also given.
文中还给出了实用电路。
The electric bridge has advantages of simple circuit, good teaching effect and high practical value.
电路简洁，教学效果好，实用性强。
The circuit is simple and practical, a good effect is obtained in practice.
电路简单实用，在实际应用中取得了良好的使用效果。
The circuit is simple and practical, a good effect is obtained in practice.
电路简单实用，在实际应用中取得了良好的使用效果。
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