Shí / yàn / zhōng / xué / shēng / guān / chá / le / yuán / diàn / chí / chǎn / shēng / diàn / liú / de / guò / chéng

实验中，学生观察了原电池产生电流的过程。

During the experiment, the students observed how a primary cell generated an electric current.