常見(jiàn)例句用作名詞 (n.)You have chosen the wrong direction of the magnetic line of force.你把磁力線的方向弄反了。A changed particle moves along the lines of force of a magnetic field, spiraling as it goes.帶電粒子沿磁力線運(yùn)動(dòng)時(shí)就會(huì)發(fā)生回轉(zhuǎn)。 返回 magnetic line of force