shí / yàn / zhōng / wǒ / men / yòng / shì / bō / qì / guān / chá / mài / dòng / diàn / liú / de / biàn / huà

实验中我们用示波器观察脉动电流的变化。

In the experiment, we used an oscilloscope to observe changes in the pulsating current.