数字电压表的设计与总结详细描述了直流电压的测试与显示。

This design detailed described the direct current electric voltage of the test and the manifestation.

youdao

数字电压表的设计与总结详细描述了直流电压的测试与显示。

This design detailed described the direct current electric voltage of the test and the manifestation.

youdao