coating of electrode

例句：

1. 1. The new battery uses a coating of graphite as its electrode.
   新电池使用石墨作为电极的涂层。
2. 2.The scientist found that the coating of the material had changed after the experiment.
   科学家发现，材料涂层在实验后发生了变化。
3. 3.The coating of the paint on the wall is peeling off.
   墙上油漆的涂层正在剥落。