ferric charge

例句：

1. 1. The iron charge is crucial for the operation of the machine.
   铁电荷对于机器的运行至关重要。
2. 2. The research on iron charge has made significant progress in recent years.
   关于铁电荷的研究近年来取得了显著进展。
3. 3. The iron charge was used to generate electricity in the early days of the industrial revolution.
   在工业革命初期，铁电荷被用来发电。