| 释义 |
磁力线cílìxiàn表明磁场强度和磁力方向的线。磁力线上的各点的切线方向跟磁场上相应点的磁场方向一致。在磁场中放一块玻璃板,板上撒一些铁屑,轻轻一敲,铁屑排列的形状就显示出磁力线来。{line of magnetic flux; line that indicates the intensity of a magnetic field and the direction of its flux; the tangent on each point of the line gives the direction of magnetic flux at that point. If we scatter iron filings on a sheet of glass, place it in a magnetic field and tap it gently, the filings will line up along the lines of magnetic flux.} |