同根派生 magnetic line of force相关词英汉例句用作名词 (n.)You have chosen the wrong direction of the magnetic line of force.你把磁力线的方向弄反了。A changed particle moves along the lines of force of a magnetic field, spiraling as it goes.带电粒子沿磁力线运动时就会发生回转。magnetic line of force更多例句