field direction的用法和樣例：
例句
- They seem to use both the intensity and direction of the magnetic fields to navigate.
它們看起來(lái)即使用磁性的強度又利用磁場(chǎng)方向來(lái)航行。 - Once an electric current is polarized, it flows more easily through a material whose magnetic field is parallel with its polarization than through one that is antiparallel.
一旦電流受到極化，則它在流經(jīng)磁場(chǎng)方向與其相同的材料時(shí)較容易通過(guò)，而較難通過(guò)磁場(chǎng)方向與它相反的材料。
