常見(jiàn)例句So far we have considered the electric field only.以上我們僅僅討論了電場(chǎng)。They do have very strong electric fields, but the fields are mostly perpendicular to the direction of propagation.它們的確都具有相當(dāng)強(qiáng)的電場(chǎng),不過(guò)電場(chǎng)的方向都垂直于運(yùn)動(dòng)的方向。 返回 electric fields