A sheet of iron,however,takes up most of the magnetic pull itself,and very little passes through the iron to attract anything on the other side.

 
  • 然而铁片本身已吸去大部分磁力,能穿过铁板去吸引铁板另一侧的东西的磁力就很少了。
今日热词
目录 附录 查词历史