2005/08/26 | 电磁石[Electromagnet]
类别(Ω〖物理〗) | 评论(0) | 阅读(50) | 发表于 22:26
A magnet formed from an electric current. The most common electromagnets consist of a wire coiled around a metallic "core" attached to a battery.
0

评论Comments

日志分类
首页[1408]
∑〖数学〗[349]
Ω〖物理〗[357]
¤〖天文〗[343]
℃〖化学〗[359]